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1
Content available remote Properties of flame spraying coatings reinforced with particles of carbon nanotubes
Czupryński A., Mele C.
Advances in Materials Science
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2021
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Vol. 21, nr 1(67)
57--76
EN
The article presents the results of the preliminary research of tribological properties of flame sprayed nickel and aluminum coatings reinforced with carbon nanotubes made on the structural steel S235J0 substrate. The carbon material – carbon nanotubes Nanocyl NC 7000 (0.5 wt.% and 1 wt.%) was used for structural reinforcement. The properties evaluation was made by the use of optical microscopy, scanning electron microscopy, Raman spectroscopy, microhardness measurements, and by means of abrasion and erosion resistance laboratory tests. The obtained results were compared with pure nickel powder coatings 2N5 (Ni 99.5%) and with pure aluminum powder coatings (EN AW 1000 series). It was proved that the flame spraying of nickel and aluminum coatings reinforced with particles carbonaceous material can be an effective alternative for other more advanced surfacing technology. The preliminary test results will be successively extended by further experiments to contribute in the near future to develop innovative technologies, that can be implemented in the aviation industry and the automotive. The presented research is a continuation of the work previously published.
2
Content available Properties of flame-powder sprayed aluminum coatings reinforced with particles of carbonaceous materials
Czupryński Artur
Welding Technology Review
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2019
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R. 91, nr 4
17--30
EN
The article presents the results of research on tribological properties of aluminum coatings, reinforced with particles of carbon nanotubes Nanocyl NC 7000 in quantities of 0.5 wt.% and 1 wt.% as well as carburite (elemental carbon) in an amount of 0.5 wt.%, flame-powder sprayed on a non-alloy structural steel grade S235J0 according to EN 10027-1. The coating properties were assessed based on macro and microscopic metallographic examinations, chemical composition tests, microhardness measurements and abrasion and erosive wear resistance tests. The obtained results were compared with the results obtained for samples with coatings made of aluminum powder - EN AW 1000 series.
PL
W artykule przedstawiono wyniki badań dotyczących właściwości tribologicznych powłok aluminiowych, wzmacnianych cząstkami materiałów węglowych w postaci nanorurek Nanocyl NC 7000 w ilości 0,5% wag. i 1% wag. oraz karburytu (węgla pierwiastkowego) w ilości 0,5% wag., natryskiwanych płomieniowo proszkowo (PFS) na podłoże z niestopowej stali konstrukcyjnej gatunku S235JO wg EN 10027-1. Oceny właściwości powłok dokonano w oparciu o badania metalograficzne makro- i mikroskopowe, badania składu chemicznego, pomiar twardości oraz badania odporności na zużycie ścierne i erozyjne. Otrzymane wyniki porównano z wynikami otrzymanymi dla próbek z powłokami wykonanymi proszkiem aluminium seria EN AW 1000.
3
Content available The properties of thermal sprayed aluminium coatings on non-alloy structural steel
Czupryński A.
Journal of Achievements in Materials and Manufacturing Engineering
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2019
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Vol. 95, nr 2
64--73
EN
Purpose: of this paper was comparison of the structure, hardness and erosive wear of aluminium coatings produced on non-alloy structural steel S355JR (EN 10025-2) using the powder flame spraying and wire arc spraying methods. Design/methodology/approach: The latest model of flame powder sprayer and wire arc sprayer was used in the experiments. This provided very reliable spraying conditions. The additional material for flame-spraying was of Metco 54NS-1 pure aluminium powder (EN AW 1100 series). In the arc spraying process the Metco Aluminium (EN AW 1100 series) 1.6 mm diameter pure aluminium thermal spray wire was used. In each spraying technology binding alloy, i.e. Ni-Al, was employed as a primer coating. The used spray processes produced dense, abrasion and erosion resistant coatings approximal 1.0 mm thick. Aluminium coatings were characterized in accordance with ASTM G 76-95 erosion resistance tests, ASTM C 633-01 adhesion strength, HV 0.1 hardness tests and metallographic analyses. The scope of research included: preparation material for spraying, selection of properly process parameters for each sprayed technique based on preliminary technological tests, coatings manufacturing, examining the structure and tribological properties of aluminium coatings, comparison of obtained samples. Findings: The obtained results have proven superior properties of arc sprayed aluminium material coatings and have shown to be promising in industrial applications. Research limitations/implications: The presented test results are a preliminary assessment of the properties of thermally sprayed aluminium coatings. Therefore, further research is required regarding the resistance of aluminium coatings to abrasion and corrosion. Practical implications: The study is focused on selecting the best and most economical technique for manufacturing of wear and corrosion resistance aluminium coatings with a thickness of approximately 1 mm. Originality/value: It has been demonstrated that the use of a Ni-Al primer coating improves the adhesion of flame and arc sprayed aluminium coatings to steel surfaces.
4
Content available Adhesion of the powder flame sprayed coatings using Fe-Cr-Co-Mo powder
Rzeźnikiewicz A., Cetnarowski P.
Welding Technology Review
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2018
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R. 90, nr 11
16--19
EN
The aim of the research was to assess the adhesion of the powder flame sprayed coatings to the previously prepared substrate. The spraying tests were carried out using Rototec 51000 base powders which was Ni-Al-Mo alloys, then coated with an outer coating made of Rototec 19404, which is an alloy Fe-Cr-Co-Mo. The coatings were tested for adhesion in accordance with the PN-EN ISO 14916:2017 standard and also topography tests of sprayed coatings using scanning electron microscopy.
5
Content available remote Wpływ przygotowania powierzchni na jakość powłoki natryskiwanej płomieniowo-proszkowo
Górka J., Czupryński A., Szyguła A., Graf B.
Przegląd Spawalnictwa
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2007
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R. 79, nr 8
116-120
PL
Opisano wpływ przygotowania powierzchni (szlifowanie szlifierką ręczną, toczenie zgrubne, gwintowanie M50 x 3, gwintowanie gwintem zalecanym przez producenta proszków) na jakość i przyczepność powłok natryskiwanych metodą płomieniową proszkową systemem RotoTec firmy Castolin na wałkach o średnicy 52 mm ze stali S355NL. W badaniach zostały użyte proszki na osnowie niklu, miedzi i żelaza. W celu określenia wpływu przygotowania powierzchni na jakość powłok przeprowadzono badania przyczepności powłoki metodą mimośrodowego toczenia oraz badania makro i mikroskopowe. Na podstawie badań zostały określone kryteria dotyczące jakości i przyczepności powłok natryskiwanych płomieniowo-proszkowo w zależności od sposobu przygotowania powierzchni do natryskiwania.
EN
An influence of surface preparation (grinding, rough turning, threading M50x3, threading with thread dimensions recommended by powder manufacturer) on quality and adhesion of RotoTec system flame sprayed layers on 52 millimeters diam. S355NL shafts. During investigations powder based on nickel, cooper and iron were used. To define an influence of surface preparation on quality of surface layers, adhesion tests by off-centre turning and microscopic examinations were made. Based on results a criteria concerning quality and adhesion of powder flame sprayed layers depending on surface preparation method.
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