The structure and properties of a Cr3C2-Ni coating deposited by a high-velocity plasma jet onto a copper substrate |
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| Authors: | A. D. Pogrebnyak M. V. Il’yashenko V. S. Kshnyakin V. V. Ponaryadov Sh. M. Ruzimov Yu. N. Tyurin |
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| Affiliation: | (1) Institute of Surface Modification, Sumy, Ukraine;(2) Belarus State University, Minsk, Belarus;(3) National University, Tashkent, Uzbekistan;(4) Paton Institute of Electric Welding, National Academy of Sciences of Ukraine, Kiev, Ukraine |
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| Abstract: | Chromium carbide-nickel coatings were deposited onto a technical grade copper substrate by means of a high-velocity plasma jet of a plasmatron operating in specially selected regimes. An analysis of the coatings showed evidence of the formation of a Ni-based solid solution, a complex chromium carbide (Cr7C3), and an fcc crystal phase with a lattice parameter of 3.614 Å. The surface of the coatings exhibits a characteristic relief resulting from a dynamic interaction between melted and fused particles of the initial powder. The local hardness on some areas of the surface and in depth of the coating reaches 66±4.5 HRC, while the coating adhesion strength varies from 25 to 300 MPa. |
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