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1

Individual implants of a loss of palate fragments fabricated using SLM equipment

Dobrzański L. A., Dobrzańska-Danikiewicz A., Gaweł T. G.

Journal of Achievements in Materials and Manufacturing Engineering

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2016

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Vol. 77, nr 1

24--30

EN

Purpose: The aim of the article is to present the new conception of design and manufacturing individual implants of a loss of palate fragments using Selective Laser Melting equipment. Design/methodology/approach: The designed virtual model of scaffolds have been produced in a process of selective laser melting (SLM). For their preparation titanium alloy powder - Ti6Al4V of suitable granulation and shape has been used. Thus obtained scaffolds have been observed in a scanning electron microscope. The structure of the pores is compatible with the shape of a designed unit cell. The outcarried EDS analysis has confirmed the chemical composition of the tested material. Findings: In the framework of research innovative porous biomimetic materials called scaffolds with the well-defined regular structure of open pores have been used. Virtual implant models have been made using Computer Aided Materials Design. They have the geometrical dimensions corresponding to a fragment of a loss of a human palate. Porous and regular structure with defined geometric dimensions and shape are designed in the form of the unit cell, which has then been subjected to the multiplication process. Practical implications: The scaffolds fabricated in the SLM process create conditions for their application as implants of a loss of palate fragments. Originality/value: Implants for the whole palate or its part, required due to mechanical injuries, tumorous diseases or cleft palate are original at the basis of a literature review.

2

The structure and properties of aluminium alloys matrix composite materials with reinforcement made of titanium skeletons

Dobrzański L. A., Dobrzańska-Danikiewicz A., Achtelik-Franczak A.

Archives of Materials Science and Engineering

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2016

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Vol. 80, nr 1

16--30

EN

Purpose: The aim of the article is to present the technology of the manufacturing of composite materials with aluminum alloys matrix with reinforcement made of titanium skeletons. This paper presents the structure and properties of these composite materials. Design/methodology/approach: Titanium skeletons manufactured by SLS technology for certain mechanical properties and geometrical features, subjected to infiltration of cast aluminium alloys: AlSi12, AlSi7Mg0.3 thereby obtain a composite materials AlSi12/Ti and AlSi7Mg0.3/Ti. Findings: The results of examinations of mechanical properties of aluminium alloys: AlSi12, AlSi7Mg0.3, titanium skeletons and composite materials AlSi12/Ti, AlSi7Mg0.3/Ti, show that the reinforcement of aluminium alloys AlSi12, AlSi7Mg0.3 with porous titanium skeletons has a beneficial effect on the mechanical properties of the composite materials AlSi12/Ti, AlSi7Mg0.3/Ti. Practical implications: The principal aim of modern composite materials with a reinforcement in the form of a porous metallic skeleton they are employed, among others, in the automotive, aviation, machine and space industry as well as in medicine. Originality/value: The use of SLS technology in combination with infiltration technology creates prospects production of composite materials having improved properties and a wide range of applicability.

3

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

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

Transport Problems

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2014

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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.

4

Interactive rehabilitation of small children with lower limbs dysfunction

Chuchnowska I., Sękala A., Dobrzańska-Danikiewicz A.

Journal of Achievements in Materials and Manufacturing Engineering

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2014

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Vol. 64, nr 1

20--26

EN

Purpose: of this paper is to presents a method of interactive rehabilitation based on a mechatronic system supporting psychomotor rehabilitation of children with lower limbs dysfunction. Design/methodology/approach: The method is grounded on stimulation of senses through image and sound. To achieve this purpose one used modern multimedia solutions in conjunction with an intelligent controlling system. The system controls the degree of the set rehabilitation load as well as measures the child’s concentration. Findings: The proposed method is a kind of contemporary physiotherapy which combines traditional cyclotherapy and stimulation of the child’s intellectual development by means of Glenn Doman’s improvement method or with the use of music therapy depending on the degree of the child’s intellectual development. Therapeutic activities undertaken with the use of the developed equipment may in the case of paresis or paralysis restore the action of the muscles by improving their elasticity or increasing their ability to react to stimulation of the nervous system. Research limitations/implications: The combination of movement therapy with psychological stimulation enables the children to use their abilities more efficiently and speeds up the rehabilitation process. Practical implications: The application of the equipment in question increases efficiency of the therapists’ and parents’ actions, being at the same time a vital element supporting the laborious and painstaking process of rehabilitation of little patients. Originality/value: The method consists in movement therapy combined with simultaneous psychological stimulation of the child.

5

Synteza wielościennych nanorurek węglowych metodą katalityczno-chemicznego osadzania z fazy gazowej

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

Inżynieria Materiałowa

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2014

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Vol. 35, nr 6

477--480

PL

Metoda katalityczno-chemicznego osadzania z fazy gazowej (CCVD) umożliwia syntezę wysokiej jakości wielościennych nanorurek węglowych na masową skalę. Można wyróżnić wiele zmiennych, które wpływają w trakcie syntezy na rodzaj i postać produktu finalnego. Celem artykułu jest wyznaczenie najkorzystniejszych parametrów procesu syntezy wielościennych nanorurek węglowych metodą katalityczno-chemicznego osadzania z fazy gazowej przez odpowiedni dobór temperatury i czasu procesu syntezy oraz prędkości przepływu wodoru. Zmienne te wstępnie wyselekcjonowano jako najistotniej wpływające na postać i jakość wytworzonego nanomateriału węglowego. Do obrazowania struktury i morfologii nowo wytworzonych wielościennych nanorurek węglowych wykorzystano skaningową mikroskopię elektronową i transmisyjną mikroskopię elektronową. Badanie stopnia zdefektowania wytworzonych nanorurek węglowych wykonano metodą spektroskopii ramanowskiej.

EN

Catalytic Chemical Vapor Deposition (CCVD) method allows for the synthesis of high-quality multiwall carbon nanotubes on a mass scale. A number of variables that affect the course of the synthesis of the type and the form of the final product can be distinguished. The purpose of this paper is to present an approach for the optimisation of the synthesis process of multiwall carbon nanotubes by Catalytic Chemical Vapor Deposition by appropriately selecting the temperature and time of the synthesis process and the hydrogen flow rate. These variables are pre-selected as one which the most influencing on the character and quality of the produced carbon nanomaterial. To image the structure and the morphology of the newly formed multiwall carbon nanotubes scanning electron microscopy and transmission electron microscopy have been used. Research purity and the degree of defecting of produced carbon nanotubes were made using Raman spectroscopy.

6

Charakterystyka nanokompozytów typu MWCNT-Pt

Dobrzańska-Danikiewicz A., Łukowiec D.

Inżynieria Materiałowa

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2014

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Vol. 35, nr 6

481--484

PL

W ramach wykonanych badań wytworzono materiały nanokompozytowe zawierające nanorurki węglowe pokryte nanocząstkami platyny. Celem prowadzonych prac było wszechstronne scharakteryzowanie wytworzonych materiałów obejmujące badanie mikrostruktury, morfologii, ocenę rozmieszczenia nanocząstek platyny na powierzchni nanorurek węglowych oraz szacunkowe określenie średniej wielkości kryształów platyny. W badaniach wykorzystano wysokiej jakości wielościenne nanorurki węglowe MWCNTs o długości ok. 200 μm i średnicy 10÷15 nm otrzymane w procesie chemicznego osadzania z fazy gazowej. Surowe nanorurki nie zawierały zanieczyszczeń metalicznych ani amorficznych depozytów węglowych. W celu osadzenia nanocząstek platyny na powierzchni nanorurek węglowych zastosowano metodę pośrednią polegającą na przyłączeniu wcześniej wytworzonych nanocząstek platyny do powierzchni sfunkcjonalizowanych nanorurek węglowych. W wyniku wykonanych eksperymentów otrzymano materiał nanokompozytowy zawierający nanorurki węglowe pokryte nanocząstkami platyny o 5% udziale masowym. W trakcie badań służących poznaniu mikrostruktury oraz morfologii otrzymanych nankompozytów zastosowano następujące techniki badawcze: spektroskopię ramanowską, skaningową mikroskopię elektronową, skaningową transmisyjną mikroskopię elektronową i transmisyjną mikroskopię elektronową.

EN

In the framework of the performed experiments nanocomposite materials consisting of carbon nanotubes coated with platinum nanoparticles have been prepared. The aim of the works has been to thoroughly characterize produced materials including examinations of the microstructure, morphology, the evaluation of the distribution of platinum nanoparticles on the surface of carbon nanotubes and an estimation of the average size of the platinum crystals. In researches high quality multi-wall carbon nanotubes MWCNTs of the length of ca. 200 nm and the diameter of 10÷15 nm obtained in the process of chemical vapour deposition have been used. Raw nanotubes have contained neither metallic impurities nor amorphous carbon deposits. To deposit platinum nanoparticles on the surface of carbon nanotubes using an indirect method relying on the connection of the earlier produced surface of the platinum nanoparticles to the surface of functionalized carbon nanotubes. As a result of made experiments a nanocomposite material consisting of carbon nanotubes coated with platinum nanoparticles of 5% mass fraction have been achived. During researches aiming at the familirisation with the microstructure and morphology of the obtained nanocomposites the following research techniques: Raman spectroscopy, scanning electron microscopy, scanning transmission electron microscopy and transmission electron microscopy have been used.

7

The Structural Stability of the Fe36 Co36 Si19 B5 Nb4 Bulk Amorphous Alloy

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

Archives of Metallurgy and Materials

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2014

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Vol. 59, iss. 1

259--262

EN

In this paper, the results of the investigation into the fractured surface microstructure of the amorphous samples of Fe36 Co36 Si19 B5 Nb4 in the shape of rods of diameters: 1 mm, 2 mm and 3 mm in the as-cast state are presented. The samples were prepared by injection of molten alloy into cooled copper dies. The process of diffusion in the investigated material has a different speed depending on the temperature gradient within the volume of the rod. The atomic diffusion leads to the creation of different zones within the rod fracture: the zone in contact with the copper die, the intermediate fracture zone, and the zone in the vicinity of the rod core; the three zones have been found to exhibit different amorphous structures.

PL

W pracy przedstawiono wyniki badań mikrostruktury na powierzchni przełomów próbek Fe36 Co36 Si19 B5 Nb4 amorficznych w postaci prętów o średnicy 1 mm. 2 mm i 3 mm. w stanie po zestaleniu. Pręty wytworzono metodą wtłaczania ciekłego stopu do miedzianej, chłodzonej cieczą formy. Proces dyfuzji atomów w badanym materiale charakteryzuje się inną dynamiką w zależności od gradientu temperatury w objętości pręta. Wyróżnia się trzy wyraźnie widoczne strefy: od kontaktu z miedzianą formą, strefę przejściową oraz strefę opisującą rdzeń pręta. Każdą z wyróżnionych stref charakteryzują różne konfiguracje atomów w zakresie stanu amorficznego. Na podstawie badań stwierdzono, że w masywnych materiałach amorficznych występuje fluktuacja składu oraz gęstości w zależności od szybkości chłodzenia.

8

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

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

Archives of Metallurgy and Materials

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2014

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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.

9

MWCNTs-Pt versus MWCNTs-Re nanocomposites manufacturing method

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

Archives of Materials Science and Engineering

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2014

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Vol. 67, nr 1

5--13

EN

Purpose: The primary aim of the article is to compare fabrication methods and present newly fabricated MWCNTs-NPs nanocomposites whose structural components are carbon nanotubes and platinum and rhenium nanoparticles. Design/methodology/approach: The newly fabricated nanocomposites underwent STEM examinations in the bright and dark to show their structure. Raman spectroscopy examinations were carried out, as well, to confirm changes in the structure of carbon nanotubes subject to the experiments. Findings: It was found based on a comparative analysis of the structure of MWCNTs-Pt and MWCNTs-Re nanocomposites that functionalisation methods and a reduction method of precursors of selected noble elements have a significant effect on the structure and morphology of the compared carbon nanocomposites. Practical implications: Nanocomposites consisting of carbon nanotubes decorated with metal nanoparticles, including Pt and Re, possess special electrical properties and a developed specific area, which makes them particularly suitable as active elements of industrial gas sensors. The materials can also be used as biosensors and catalysts in the future. Originality/value: A comparative analysis of the following author’s methods: (i) fabrication of MWCNTs-Pt nanocomposite, which was given numerous awards at international innovation and invention exhibitions and (ii) fabrication of MWCNTs-Re nanocomposite pending patent protection.

10

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

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

Archives of Materials Science and Engineering

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2014

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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.

11

Carbon nanotubes synthesis time versus their layer height

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

Archives of Materials Science and Engineering

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2014

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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.

12

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

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

Archives of Materials Science and Engineering

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2013

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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.

13

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

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

Archives of Materials Science and Engineering

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2013

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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

Carbon nanotubes decorating methods

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

Archives of Materials Science and Engineering

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2013

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Vol. 61, nr 2

53--61

EN

Purpose: The work is to present and characterise various methods of depositing carbon nanotubes with nanoparticles of precious metals, and also to present the results of own works concerning carbon nanotubes coated with platinum nanoparticles. Design/methodology/approach: Electron transmission and scanning microscopy has been used for imaging the structure and morphology of the nanocomposites obtained and the distribution of nanoparticles on the surface of carbon nanotubes. Findings: The studies carried out with the HRTEM and SEM techniques have confirmed differences in morphology, homogeneity and density of depositing platinum nanoparticles on the surface of carbon nanotubes and its structure. Research limitations/implications: The studies conducted pertained to the process of decorating carbon nanotubes with platinum nanoparticles. Further works are planned aimed at extending the application scope of the newly developed methodology to include the methods of nanotubes decorating with the nanoparticles of other precious metals (mainly palladium and rhodium). Practical implications: CNTs-NPs (Carbon NanoTube-NanoParticles) composites can be used as the active elements of sensors featuring high sensitivity, fast action, high selectivity and accuracy, in particular in medicine as cholesterol and glucoses sensors; in the automotive industry for the precision monitoring of working parameters in individual engine components; in environmental conservation to examine CO2, NOx, and CH4 concentrations and for checking leak-tightness and detecting hazardous substances in household and industrial gas installations. Originality/value: The comprehensive characterisation of the methods employed for fabricating nanocomposites consisting of carbon nanotubes deposited with Pt, Pd, Rh, Au, Ag nanoparticles with special consideration to the colloidal process.

15

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

Dobrzańska-Danikiewicz A., Żmudzki J.

Archives of Materials Science and Engineering

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2012

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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.

16

E-foresight inżynierii powierzchni materiałów

Dobrzańska-Danikiewicz A.

Problemy Jakości

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2011

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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

17

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

Dobrzańska-Danikiewicz A., Lukaszkowicz K.

Inżynieria Materiałowa

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2011

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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.

18

Komputerowo wspomagane metody foresightowe w zastosowaniu do inżynierii powierzchni

Dobrzańska-Danikiewicz A.

Czasopismo Techniczne. Mechanika

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2011

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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.

19

Strategic development perspectives of laser processing on polycrystalline silicon surface

Dobrzańska-Danikiewicz A., Drygała A.

Archives of Materials Science and Engineering

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2011

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Vol. 50, nr 1

5-20

EN

Purpose: The goal of this paper is to evaluate the strategic perspectives of polycrystalline silicon texturisation according to custom foresight methodology. The texturing type was the technology division criterion. Thus, in the paper three technologies, as following: polycrystalline silicon texturisation by alkaline etching, laser treatment and laser treatment with chemical etching were compared. Design/methodology/approach: In the framework of the foresight-materials science research, a foresight matrices set was prepared, the strategic development tracks were determined, as well as materials science experiments using a Nd:YAG laser, a scanning electron microscope, a confocal laser scanning microscope and a spectrophotometer were conducted. Finally, on the basis of the obtained results the technology roadmaps were prepared. Findings: The carried out research pointed out the industrial importance of polycrystalline silicon texturisation and good perspectives for these technology groups. Research limitations/implications: Research concerning polycrystalline silicon texturisation constitute a part of a larger research project aimed at identifying, researching, and characterising the priority innovative technologies in the field of materials surface engineering. Practical implications: The presented results of experimental materials science research were proved the significant positive impact of texturisation on the structure and mechanical properties of polycrystalline silicon surface layers, which leads to the justification of their including into the set of priority innovative technologies recommended for application in industrial practice. Originality/value: The novelty of this paper is to evaluate the value of polycrystalline silicon texturisation in the background environment with their future development perspectives determination.

20

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

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

Archives of Materials Science and Engineering

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2011

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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