Wyniki wyszukiwania - Biblioteka Nauki

1

Foresight of materials surface engineering as a tool stimulating sustainable development and to increase the quality of technology

100%

Dobrzańska-Danikiewicz A.

Journal of Machine Engineering

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2010

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tom Vol. 10, No. 3

48--59

EN

Technological e-foresight on the subject of "Foresight of surface properties formation leading technologies of engineering materials and biomaterials. FORSURF" aims to identify the priority innovative technologies and strategic research trends concerning the materials surface engineering. For the purposes of conducting e-foresight, the methodology of computer aided foresight integrated researches management has been used. Conducted foresight research makes an effort to meet the market expectations and its implementation will facilitate the formulation of development strategy for small and medium-sized enterprises. The identification of leading technologies and presenting them in the form of information sheets will allow the economic representatives to be presented with those of them which have the greatest chance of contributing to the country's sustainable development. It will also provide the possibility to determin the scale of the described phenomena and select those technologies which are best for the effective implementation in the industry in respect of their advancement and "quality-price" relationship. The achievement of foresight objectives will contribute, in the long-term, to the development of knowledge-based economy, statistical increase in the quality of technologies implemented in the industry, and sustainable development.

2

Main assumptions of the foresight of surface properties formation leading technologies of engineering materials and biomaterials

100%

Dobrzańska-Danikiewicz A.

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tom Vol. 34, nr 2

165-171

EN

Purpose: The purpose of this paper is presentation of the main assumptions of the foresight of surface properties formation leading technologies of engineering materials and biomaterials. That foresight called FORSURF is the new research project co-founded by European Regional Development Found. In that paper especially the following issues are considered: the project goals, socioeconomic environment, project methodology and expected final results. Design/methodology/approach: The approach called foresight is the whole activity focused on choosing the best future vision and showing ways of that vision realisation using the right methods. FORSURF is one from the set of technology foresights. Technology foresight is the process concentrating scientists, engineers, industrialists, Government officials and others in order to identify areas of strategic research and the leading technologies, which in long term will contribute to the greatest economic and social benefits and sustain industrial competitiveness. Findings: There are following expected final results of the considered project: information cards of identified leading technologies, scenarios of possible future events and a public debate on the foresight subject matter. Research limitations/implications: The main research implication is identification of strategic research directions crucial in the next 20 years in the field of surface properties formation leading technologies of engineering materials and biomaterials. Practical implications: The main practical implication is identification of priority innovative technologies in the next 20 years in the considered research scope. Originality/value: That paper is the first publication concerning the new research project called FORSURF. Particularly, the main project assumptions are presented.

3

E-foresight inżynierii powierzchni materiałów

100%

Dobrzańska-Danikiewicz A.

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2011

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tom R. 43, nr 11

45-49

EN

Technological e-foresight on the subject of materials surface engineering aims to identify the priority innovative technologies and strategic research trends concerning the given subject area. E-foresight means conducting the foresight research using the Internet. For the purposes of conducting e-foresight, the methodology of computer aided foresight integrated researches management (CA FIRM) has been used. Conducted foresight research makes an effort to meet the market expectations and its implementation will facilitate the formulation of development strategy for small and medium-sized enterprises. It will also provide the possibility to determine the scale of the described phenomena and select those technologies which are best for the effective implementation in the industry in respect of their advancement and "quality-price" relationship. The achievement of foresight objectives will contribute, in the long-term, to the development of knowledge-based economy, statistical increase in the quality

4

The methodological fundaments of development state analysis of surface engineering technologies

100%

Dobrzańska-Danikiewicz A.

Journal of Achievements in Materials and Manufacturing Engineering

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2010

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tom Vol. 40, nr 2

203-210

EN

Purpose: The goal of this paper is to present the authority methodological fundaments of development state analysis of surface engineering technologies against a background of macro- and microenvironment. That analysis is carried out as a part of the project entitled “The foresight of surface properties formation leading technologies of engineering materials and biomaterials”. The research project called FORSURF is co-founded by European Regional Development Fund. Design/methodology/approach: The foresight is the whole activity focused on choosing the best future vision and showing ways of that vision realisation using the right methods. However, the approach called technology foresight is the process concentrating scientists, engineers, industrialists, Government officials and others in order to identify areas of strategic research and the leading technologies, which in long term will contribute to the greatest economic and social benefits and sustain industrial competitiveness. The considered FORSURF project belongs to the set of technology foresights. Findings: The set of the crucial technologies in each considered research scope is an expected result of the carried out development state analysis of surface engineering technology against a background of macro- and microenvironment. There are fourteen research scopes in the FORSURF project. Research limitations/implications: The results of the development state analysis of surface engineering technologies are the basis conditioning subject matter of the first research iteration of Delphi method carried out within the framework of the FORSURF project. The main research implication of the whole FORSURF project is an identification of strategic research directions crucial in the next 20 years in the field of surface engineering. Practical implications: The practical implication of the definition of the methodological fundaments of development state analysis of surface engineering technology is to show the way of the crucial technologies selection. The consequence of that is a creation of the basic conditioning subject matter of the first research iteration of Delphi method. Originality/value: That paper is the publication concerning the authority methodological fundaments of development state analysis of surface engineering technology against a background of macro- and microenvironment within the framework of the FORSURF project. Particularly, the way of the selection of crucial technologies being the basis conditioning a subject matter of the first research iteration of Delphi method is presented.

5

Komputerowo wspomagane metody foresightowe w zastosowaniu do inżynierii powierzchni

100%

Dobrzańska-Danikiewicz A.

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tom R. 108, z. 4-M/1

49-56

PL

Celem niniejszego artykułu jest prezentacja idei e-foresightu technologicznego i zbioru metod służących ocenie strategicznych perspektyw rozwojowych priorytetowych innowacyjnych technologii. Przedstawione podejście pozwala uporządkować, usprawnić i unowocześnić proces badań w ramach foresightu technologicznego, co zostało zweryfikowane w odniesieniu do inżynierii powierzchni materiałów.

EN

The aim of this paper is to present an e-foresight idea and a set of methods for evaluating the strategic development perspectives of priority innovative technologies. The presented approach allows for organizing, enhancing and modernizing the process of testing in the framework of the technology foresight, what has been verified with reference to material surface engineering.

6

Komputerowe wspomaganie planowania produkcji w systemach wytwórczo-montażowych

100%

Dobrzańska-Danikiewicz A.

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tom R. 10, z. 1/2

129-144

PL

Informatyzacja i komputeryzacja coraz szerszych obszarów działalności jest jednym z najistotniejszych współczesnych trendów rozwojowych przedsiębiorstw produkcyjnych. Systemy komputerowe najnowszej generacji zwane ERP II powstały w efekcie długotrwałej ewolucji założeń teoretycznych oraz technologii oferowanych przez przemysł komputerowy. Systemy te umożliwiają koordynację procesów mających miejsce w różnych przedsiębiorstwach i obsługę poprzez sieć WWW, przez co tworzą podstawy funkcjonowania przedsiębiorstw wirtualnych. Równocześnie powstają i ewoluują systemy mniejsze, bardziej specjalistyczne, do których należy zaprezentowany w niniejszym artykule komputerowy system wspomagający planowanie produkcji o nazwie SWZ-Montaż, bazujący na oryginalnej metodzie bilansowania wymagań i możliwości.

EN

Currently one of the most important developing trends observed in the production enterprises is computerisation and software implementation into more and more wide areas of their activities. The newest generation of computer systems, which are called ERP II are the result of the time-consuming evolution of the theoretical assumptions and technology offered by the computer industry. Those systems enable the coordination of the processes realised in a few different enterprises and service through the WWW net. Because of those reasons they create the basis of the virtual enterprises functioning. The smaller and more specialistic systems are created and developed at the same time. In that group of systems there is the computer system aiding production planning, which in that paper is presented. The computer system, called SWZ-Assembly has been created on the basis of the authority Requirements and Possibilities Balance Method. The presented system enables the determination of the planed time of the production orders realisation and it generates the procedures controlling the production flow in the manufacturing assembly systems.

7

Strategiczne kierunki rozwojowe technologii nakładania powłok PVD na stop miedzi z cynkiem

63%

Dobrzańska-Danikiewicz A. , Lukaszkowicz K.

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tom Vol. 32, nr 4

381-384

PL

Celem artykułu jest ocena strategicznych perspektyw rozwojowych nanoszenia powłok PVD na podłoże ze stopu miedzi z cynkiem CuZn40Pb2. Jako kryterium podziału technologii przyjęto liczbę warstw naniesionych na podłoże (1, 15, 150), wyodrębniając w ten sposób trzy grupy technologii do dalszych badań. W ramach badań sporządzono zbiór macierzy określających wartość i strategie rozwojowe technologii na tle otoczenia, przeprowadzono eksperymenty materiałoznawcze mające na celu określenie własności mechanicznych i tribologicznych oraz odporność na korozję i erozję materiału podłoża z naniesioną na jego powierzchnię różną liczbą warstw w procesie PVD, jak również opracowano mapy drogowe technologii. Wyniki badań dowodzą istotnego, pozytywnego wpływu nanoszenia powłok PVD na podłoże ze stopu miedzi z cynkiem, z czego wynika zasadność włączenia ich do zbioru innowacyjnych technologii rekomendowanych do zastosowań w przemyśle, w tym w małych i średnich przedsiębiorstwach. Przeprowadzone prace są częścią szerszego projektu mającego na celu wygenerowanie i scharakteryzowanie najbardziej perspektywicznych technologii inżynierii powierzchni materiałów.

EN

The purpose of this paper is to evaluate strategic development perspectives of manufacturing coatings in the PVD process on the CuZn40Pb2 brass substrate. The number of layers (1, 15, 150) applied to the substrate was adopted as the criterion for technology division, thus obtaining three technology groups for further researches. Those researches include: the preparation of matrix set determining the technology value and technology development strategies against the background of environment, carrying out materials science experiments which test the mechanical and tribological properties and the resistance to corrosion and erosion of brass covered with a varied number of layers, as well as preparing technology roadmaps. The research results prove the significant positive impact of covering with PVD coatings onto the brass substrate which leads to the justification of their including into the set of priority innovative technologies recommended for application in industry, including in SME. The carried out researches are part of a bigger research project aimed at selecting, testing and characterizing priority innovative material surface engineering technologies.

8

Required buffer capacities in assembly systems

63%

Krenczyk D. , Dobrzańska-Danikiewicz A.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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tom Vol. 23, nr 1

95-98

EN

Purpose: The aim of the realised analysis is the determination of the set of conditions. The fulfilment of those conditions enables the synchronisation of the assembly system work into the steady state. It is necessary to specify the rules controlling the assembly system work. Rhythmic concurrent production with wide assortment in the considered assembly system is realised. Design/methodology/approach: The theoretical roots of the considerations presented in that paper include theory of constraints. The presented approach is consistent with the authority method called Requirements and Possibilities Balance Method (RPBM). Findings: Two kinds of system buffers: the entrance buffers and the inter-resources buffers are considered in that paper. The number of buffers elements needed for production during first steady state of the given system has been determined. Mathematical formulas specifying the minimal capacity of the buffers allocated in the assembly system have been outworked. Research limitations/implications: The formulas specifying the minimal buffer capacity constitute the first step towards formulation of the automatic method. That method is designed for the automatic construction of rules controlling the system work during transient phases between two different steady states. The process enables automation of the introduction filling of the system buffers. Practical implications: The presented formulas can become an integrated part of existing authority software. The developed computer system aids the decision-making process connected with production planning and ensures effective utilisation of production resources. Moreover, the formulas correctness during computer simulations has been verified. Originality/value: To develop the formulas specifying the minimal capacity of the system buffers is the main achievement of the given paper. The presented approach permits to solve the problem concerning the synchronisation of the assembly system work into the steady state.

9

Development trends of mucous-borne dentures in the aspect of elastomers applications

63%

Dobrzańska-Danikiewicz A. , Żmudzki J.

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2012

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tom Vol. 55, nr 1

5-13

EN

Purpose: The aim of this study is to foreseen the influence of elastomers on the development of mucous-borne dentures in the aspect of bio-compatible use of prosthetic foundation tissue load bearing capacity. Design/methodology/approach: Multi-criteria comparative analysis based on the dendrological matrix of attractiveness and potential was used for the studies of denture solution and materials. There were differentiated seven groups of conventional dentures without an implantological stabilisation - the so-called hard dentures (CD) and those with a soft relining (CD-P), stabilized on one implant (SID) or on two implants (TID), that were differentiated as far as the denture attachment to implant was concerned. The first group was marked as "hard" (K) due to the used materials and inconsiderable lateral compliance. The elastomeric attachments (S) constituted the second group of attachments. Findings: In case of conventional dentures a significant influence of the relining on attractiveness was observed. In case of dentures retained on elastomeric attachments - they decided not only on the attractiveness, but they have also significantly increased dentures' potential. Research limitations/implications: Throughout the studies the variation of denture bearing structure materials were not taken into account, based on the assumption that acrylates are the most commonly used. Practical implications: The similar level of attractiveness of dentures retained on implants significantly varying as far as their construction is concerned shows that the focus should be mainly put on material design of elastomers' wearing characteristics. Originality/value: Multi-criteria heuristic analysis proved to be an effective tool for examination of dentures in the aspect evaluation of dentures material and cosntruction that show perspectives of the broadest use due to exploitation of the tissue bearing capability.

10

The selection of the production route in the assembly system

63%

Dobrzańska-Danikiewicz A. , Krenczyk D.

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tom Vol. 17, nr 1-2

417--420

EN

Purpose: The aim of the conducted research is the outworking of the methodology enabling the selection of the fastest production route from the set of the alternative production routes. The presented approach is applied to the assembly system described by the following matrices: the assembly process matrices specified for each assembly process, the processes links matrix specified for the entire system and the alternative routes matrix specified for the entire system. In the considered assembly system rhythmic concurrent production with wide assortment is realised. Design/methodology/approach: The considerations presented in that paper have the theoretical roots in theory of constraints as well as critical path scheduling techniques. Findings: The result of carried out works is the three-step methodology enabling the determination which production route from the set of the alternative production routes enables the fastest customer order realisation. The proposed methodology enables production planning in the way ensuring the satisfaction of the customer needs as soon as possible. Research limitations/implications: The future research will concern the assembly system behaviour in a starting-up phase and a cease phase as well as transient phases. That work boils down to meta-rules determination for the considered class of the system. Practical implications: The proposed three-step methodology can become the integrated part of existing authority software. The outworked computer system aids the decision-making process connected with production planning and ensures effective utilisation of production resources. Originality/value: The main achievement of the given paper is to outwork the three-step methodology permitting to solve the decision problem concerning the selection of the fastest production route from the set of the alternative production routes, which are possible for the realisation in the assembly system.

11

Production flow synchronisation versus buffer capacities in assembly systems

63%

Dobrzańska-Danikiewicz A. , Krenczyk D.

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tom Vol. 29, nr 1

91-98

EN

Purpose: The goal of the considerations carried-out in that paper is the determination of the system synchronisation conditions. Those conditions concern capacities of system buffers. The fulfilment of the developed conditions should guarantee the production flow synchronisation into the expected steady state determined by the system bottleneck. In analysed assembly system rhythmic concurrent production with wide assortment is realised. Design/methodology/approach: The considerations presented in that paper are rooted in the authority method called Requirements and Possibilities Balance Method (RPBM). The experiments in the computer simulations programmes have been carried-out within the confines of the researches. The computer simulation models of the assembly systems using Taylor II for Windows and Enterprise Dynamics have been built. Findings: There are two kinds of system buffers: the entrance buffers and the inter-resources buffers in the assembly systems. The interdependences informing about the required number of elements allocated into the system buffers in order to the production realisation during the first cycle of the system steady state has been formulated. Moreover, the minimal buffer capacities have been determined. Research limitations/implications: The developed interdependences constitute the first step towards formulation of the automatic method designed for the automatic construction of rules controlling the system work during system transition state. That method should enable the automation of the system buffers filling-up. Practical implications: The presented system synchronisation conditions can become an integrated part of existing authority computer system. It aids the decision-making process connected with production planning and control. Originality/value: To develop the interdependences is the main achievement of the given paper. The presented approach permits to solve the problem concerning the production flow synchronisation into the expected steady state determined by the system bottleneck.

12

Technology validation of coatings deposition onto the brass substrate

63%

Dobrzańska-Danikiewicz A. , Lukaszkowicz K.

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2010

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tom Vol. 46, nr 1

5-38

EN

manufacturing metallic-ceramic coatings in the process of physical vapor deposition (PVD) on the CuZn40Pb2 brass substrate. The amount of layers applied to the substrate was adopted as the criterion for technology division, thus obtaining three technology groups for foresight researches. Design/methodology/approach: The carried out foresight-materials science researches included creating a dendrological matrix of technology value, a meteorological matrix of environment influence, a matrix of strategies for technologies, laying out strategic development tracks, carrying out materials science experiments which test the mechanical and tribological properties and the resistance to corrosion and erosion of brass covered with a varied number of layers applied using the method of reactive magnetron evaporation, as well as preparing technology roadmaps. Findings: High potential and attractiveness were shown of the analyzed technologies against the environment, as well as a promising improvement of mechanical and tribological properties and an increase of resistance to material corrosion and erosion as a result of covering with PVD coatings. Research limitations/implications: Researches pertaining to covering the brass substrate with PVD coatings is part of a bigger research project aimed at selecting, researching and characterizing priority innovative material surface engineering technologies. Practical implications: The presented results of experimental materials science researches prove the significant positive impact of covering with PVD coatings on the structure and mechanical properties, as well as the resistance to corrosion, erosion and abrasive wear of brass which leads to the justification of their including into the set of priority innovative technologies recommended for application in industrial practice, including in small and medium-size companies. Originality/value: The advantage of the article is the specification of the significance of the technology involving covering the brass substrate with mono- and multilayer PVD coatings against the environment, together with the recommended strategies of conduct, strategic development tracks and roadmaps of these technologies, taking into account the impact of the processes of applying these coatings onto the structure and the improvement of the properties of the tested surface layers.

13

Carbon nanotubes manufacturing using the CVD equipment against the background of other methods

51%

Dobrzańska-Danikiewicz A. , Łukowiec D. , Cichocki D. , Wolany W.

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tom Vol. 64, nr 2

103--109

EN

Purpose: The primary purpose of the article is to present the most popular techniques of manufacturing carbon nanotubes (CNTs). The Chemical Vapour Deposition (CVD) method is described in detail with special focus laid on the universality of such technique and on economic considerations. The outcomes of investigations presenting carbon nanotubes fabricated with the EasyTube® 2000 system are also demonstrated. Design/methodology/approach: Electron microscopy was used for illustrating the structure and morphology of newly manufactured multiwalled carbon nanotubes. Findings: The microscopic examinations conducted with high-resolution transmission electron microscopy have confirmed the homogeneity, high quality and purity of the manufactured carbon nanotubes. Practical implications: Carbon nanotubes are currently valued because of their diverse applications. Depending on the structure, carbon nanotubes may act as conductors or semiconductors and such properties can be utilised in electronics. Other fields of application include optics, medicine, transportation (lightweight and robust constructions). CNTs are also utilised as elements of chemical and biochemical sensors, especially when coated with particles of precious metals (e.g. Pt, Au, Pd). Carbon nanotubes are also used as a reinforcing component in composites. Originality/value: The characterisation of carbon nanotubes fabrication methods with special consideration to the chemical vapour deposition method by means of an EasyTube 2000 device by FirstNano.

14

Microstructure evolution after thermo-mechanical treatment of X11MnSiAl25-1-3 TWIP-type steel

51%

Dobrzańska-Danikiewicz A. , Borek W. , Mazurkiewicz J. , Jagiełło A.

Archives of Materials Science and Engineering

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2013

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tom Vol. 59, nr 1

14--21

EN

Purpose: The purpose of the article is to present the results of research of the effect of thermal and thermoplastic working on the structure of high-manganese austenitic TWIP steels. Design/methodology/approach: Plastometric tests were performed with DSI (Dynamic System Inc.) Gleeble 3800 instrumentation being the equipment of the Scientific and Didactic Laboratory of Nanotechnology and Materials Technologies of the Institute of Engineering Materials and Biomaterials. Changes in the microstructure after individual stages of hot plastic deformation were determined on the basis of detailed microstructure tests with the light microscope and scanning electron microscope. An X-ray phase qualitative analysis of the examined materials in the condition after casting and after thermoplastic working was carried out with the XPert diffractometer by Philips. Findings: It was concluded based on the tests performed that the structure of the examined austenitic high-manganese steel in the initial condition is represented by austenite with numerous annealing twins. The results obtained for investigations in a continuous compression test will enable to establish power and energy parameters and design a hot compression process, consisting of several phases, of axisymmetric specimens, simulating the final rolling passes. Practical implications: By elaborating the detailed data concerning structural changes and power and energy parameters of the thermoplastic working process of the investigated high-manganese austenitic TWIP steel type, it will be possible to design appropriately the final passes of the hot rolling process to obtain an optimum size of grains, which will in turn influence the improved strength properties of the investigated high-manganese austenitic X11MnSiAl25-1-3 steel. Originality/value: The application of thermoplastic working of high-manganese austenitic TWIP steel.

15

Assessment of strategic development perspectives of laser treatment of casting magnesium alloys

51%

Dobrzańska-Danikiewicz A. , Tański T. , Malara S. , Domagała-Dubiel J.

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2010

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tom Vol. 45, nr 1

5-39

EN

Purpose: The purpose of this paper is to assess the strategic perspectives of laser treatment of casting magnesium alloys such as MCMgAl12Zn1 MCMgAl9Zn1, MCMgAl6Zn1, MCMgAl3Zn1 using carbide TiC, WC, VC, SiC and Al2O3 oxide powders. The type of powder was taken as a criterion for the technology groups distinguishing in that way five groups of technologies for further research studies. Design/methodology/approach: In the framework of foresight-materials science researches: the dendrological matrix of technology value, the meteorological matrix of environment influence and the matrix of strategies for technology with the strategic development tracks were made, such researches as: X-ray microanalysis, qualitative X-ray analysis, hardness tests and roughness measurements were carried out under the scanning electron microscope and the light microscopy, as well as technology roadmaps were prepared. Findings: The outcarried researches pointed out very high potential and attractiveness of the given technologies in the background environment and the promising improvement of mechanical properties of examined materials. Research limitations/implications: Described materials science and foresight research concerning the cladding and remelting of carbides and oxides in the surface of casting magnesium alloys are a part of a wider research project aiming to define, examine and characterise innovative technology of surface engineering of engineering materials. Practical implications: The presented results of experimental materials science researches prove a significant positive effect of laser treatment with the use of carbides and oxides on the structure and properties of casting magnesium alloys that is why it is legitimate that they are included in the set of innovative technologies qualified for use in an industrial practice including small and medium enterprises. Originality/value: The value of this paper is to determine the value of laser treatment technology of casting magnesium alloys in the background environment with recommended procedure strategies, the strategic development tracks and technology roadmaps including the influence of this treatment on the quality, microstructure and properties of surface layers obtained by cladding and remelting casting magnesium alloys.

16

Carbon nanotubes synthesis time versus their layer height

51%

Dobrzańska-Danikiewicz A. , Cichocki D. , Łukowiec D. , Wolany W.

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tom Vol. 69, nr 1

5--11

EN

Purpose: The purpose of the article is to present an approach for the optimisation of a synthesis process of Vertically Aligned Multi-Walled Carbon Nanotubes (VAMWCNTs) with Catalytic-Chemical Vapour Deposition (CCVD) on a silicon substrate. Design/methodology/approach: Scanning and transmission electron microscopy was applied for showing the structure and morphology of the synthesised multi-walled carbon nanotubes. Findings:The article presents and characterises nanostructural carbon materials fabricated with the CCVD method using an Fe catalyst deposited on a silicon substrate. SEM and TEM examinations have confirmed that a vertical layer of a CNTs “forest” growing on a silicon substrate containing a metallic catalyst is obtained and enabled to select optimum time for their growth process. Practical implications: Vertically aligned multi-walled carbon nanotubes can be applied in numerous fields of technology, especially in scanning probes, photovoltaic cells, anisotropic conductive materials, semiconductors, membranes, chemical and biological sensors, field emitters in nanoelectronics and in molecular electronics. Originality/value: An approach is presented of optimising the synthesis time of VAMWCNTs with a metallic catalyst using CCVD with an EasyTube® 2000 device by FirstNano.

17

Prediction development of selected groups of engineering materials used in the automotive industry

51%

Tański T. , Labisz K. , Dobrzańska-Danikiewicz A.

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tom T. 9, z. 2

75--87

PL

Celem niniejszego artykułu jest prezentacja wyników ilościowej analizy porównawczej wybranych materiałów i technologii wytwarzania, wskazanie ich perspektyw rozwojowych oraz prezentacja możliwości aplikacyjnych w przemyśle motoryzacyjnym. Zapotrzebowanie na elementy i części wykonane z odlewniczych stopów aluminium zgłaszane przez przemysł motoryzacyjny sprawia, że perspektywy rozwojowe technologii efektywnego ich wytwarzania, zapewniających oczekiwane własności produktu, do których należy powierzchniowa obróbka laserowa, oraz metody fizycznego i chemicznego osadzania powłok z fazy gazowej zostały ocenione na poziomie bardzo wysokim.

EN

The purpose of the article is to present the results of comparative quantitative analysis of selected materials and manufacturing technologies, to indicate their development outlooks and to present its application opportunities in the automotive industry. Concerning of the demand from the automotive sector for components and parts made of cast aluminum alloys, the development expectations of their effective manufacturing technology meeting the expected product properties, including surface laser treatment as well as physical and chemical vapour deposition, were evaluated to be very high.

18

Comparison of results obtained using the injection method of preparation of solid amorphous alloys with and without suction

45%

Klimas J. , Łukaszewicz A. , Szota M. , Nabiałek M. , Dobrzańska-Danikiewicz A.

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2014

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tom Vol. 67, nr 2

77--83

EN

Purpose: The study compares the structure and properties titanium alloy Ti-6Al-4V produced by injection method allowing the production of massive amorphous materials in two varies – with and without suction. Design/methodology/approach: Samples were produced form titanium alloy Ti-6Al-4V produced by injection method. Structures and properties were compared of the same alloy but with different conditions in production process – with and without suction. To achieve the objective perused the following tests were carried out: study of phase composition by X-ray diffraction, observation of microstructure by using optical microscope and SEM, study of surface geometry – roughness, abrasion resistance tests and microhardness tests. Results: Microstructural studies have allowed to observe that the titanium alloy Ti-6Al-4V produced by injection method in both varies – with and without suction during injection to copper mold, has structure partially crystalized – nanocrystalline. In structure occur the crystal nuclei and lack of arrangement and regularity. The study of microhardness showed 100 HV 0.1 units higher hardness value in the embodiment with suction in comparison to the variant without suction. Titanium alloy Ti-6Al-4V produced with suction has better abrasion resistance in comparison with same alloy without suction. Alloy produced with suction has lower development area. Originality/value: The paper presented studies of massive amorphous and nanocrystalline alloys produced by alternative method – injection casting in two variants – with and without suction. That kind of production allow produced alloys with same chemical composition as commercial but with far better properties.

19

Neural networks aided future events scenarios presented on the example of laser surface treatment

45%

Dobrzańska-Danikiewicz A. , Trzaska J. , Jagiełło A. , Jonda E. , Labisz K.

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2011

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tom Vol. 51, nr 2

69-96

EN

Purpose: The purpose of the paper is to present a methodological concept allowing to demonstrate the development directions of materials surface engineering according to the level of generality and the intensity of the phenomena analysed on other phenomena. Design/methodology/approach: A set of analytical methods and tools was used to present the development directions of materials surface engineering at the three levels analysed, i.e.: a macro-, meso- and microlevel. The analytical methods and tools comprise the scenario method, artificial neural networks, Monte Carlo method, e-Dephix method, statistical lists as bar charts, foresight matrices together with technology development tracks, technology roadmaps, technology information sheets and the classical materials science methods. Findings: A research methodology allowing to combine a presentation and description of the forecast future events having a varied level of generality and capturing the cause and effect relationships existing between the events. Research limitations/implications: The methodological concept discussed, implemented with reference to materials surface engineering, has a much broader meaning, and can be successfully applied in other technology foresights, and also in industrial and thematic foresights after minor modifications. Practical implications: The outcomes of the research conducted may be and should be used in the process of creating and managing the future of materials surface engineering and, within the time horizon of 20 years, may and should influence positively the development of the economy based on knowledge and innovation, sustainable development and the statistical level of the technologies used in industry, especially in small- and medium-sized enterprises. Originality/value: An own methodological concept constitutes an original way of presenting the development directions of the investigated field of knowledge. The use of neural networks

20

Effect of Cooling Rate on Magnetic Properties, Size and Type of Structural Defects in the Volume of Bulk Amorphous Fe36 Co36 B19 Si5 Nn4 Alloy in the Form of Rods of Various Diameters

38%

Nabiałek M. , Dobrzańska-Danikiewicz A. , Lesz S. , Pietrusiewicz P. , Szota M. , Dośpiał M.

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2014

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tom Vol. 59, iss. 1

263--268

EN

This paper presents the results of microstructure and magnetic properties analysis for bulk amorphous samples of Fe36 Co36 B19 Si5 Nn4 alloy in the form of rods of 1 mm, 2 mm, and 3 mm diameters in the as-cast state, produced using the method of injecting liquid alloy into cooled copper mold. The main purpose of the research was to examine the effect of solidification speed of the liquid material into amorphous state on the shape of initial magnetization curve as well as to determine the type and size of structural defects occurring in the volume of the material. In order to achieve these objectives, the magnetization measurements were carried out, which according to H. Kronmüller’s theory on magnetization behavior near the area called reaching the ferromagnetic saturation, allow to determine the type, size, and surface density of structural defects occurring in the volume of the sample. The analysis of reduced magnetization curves indicates that solidification speed of the liquid alloy into the amorphous state is the main determining factor for the shape of initial magnetization curve and for the type and size of structural defects formed in the sample, which affects such magnetic parameters as: coercive field (HC) or saturation magnetization (MS).

PL

W pracy przedstawiono wyniki badań mikrostruktury oraz właściwości magnetycznych masywnego stopu amorficznego Fe36 Co36 B19 Si5 Nn4 w stanie po zestaleniu. Próbki stopu zostały wytworzone w postaci prętów o średnicy 1 mm, 2 mm i 3 mm przy zastosowaniu metody wtłaczania ciekłego materiału do miedzianej formy chłodzonej wodą. Mikrostrukturę próbek w stanie po zestaleniu badano wykorzystując dyfrakcję promieni Rontgena. natomiast magnetyzację w silnych polach magnetycznych mierzono wykorzystując magnetometr wibracyjny (VSM). Głównym celem pracy było zbadanie wpływu czasu zestalania ciekłego materiału do stałego stanu amorficznego na przebieg pierwotnej krzywej magnesowania oraz określenie rodzaju i wielkości defektów strukturalnych występujących w badanych próbkach.