Phase and Chemical Composition of Diffusion Titanium-Aluminum-Chromium Coatings Based on ХН55ВМТКЮ Alloy

Authors O.E. Datsiuk1, V.G. Hignjak1 , T. V. Loskutova1, N.A. Harchenko2 , Т.P. Hоvоrun2 , V. V. Simkulet3

1National Technical University of Ukraine “I. Sikorsky Kyiv Polytechnic Institute”, 37, Peremoha Prosp., 03056 Kyiv, Ukraine,

2Sumy State University, 2, Rimsky Korsakov Str., 40007 Sumy, Ukraine,

3Technical University of Kosice, 1, Bayerova Str., 08001 Preshov, Slovak Republic

Issue Volume 10, Year 2018, Number 3
Dates Received 12 February 2018; revised manuscript received 08 June 2018; published online 25 June 2018
Citation O.E. Datsiuk, V.G. Hignjak, T. V. Loskutova, et al., J. Nano- Electron. Phys. 10 No 3, 03015 (2018)
PACS Number(s) 81.65.Lp, 68.55.Nq, 62.20.Qp, 32.30Rj
Keywords Heat resistance, Refractory alloy, Diffusion coatings, Titanium (10) , Aluminum. Сhromium, Phase (44) , Oxide (60) , Structure (104) , Microhardness (2) .

The main aspects of the heat resistance process are analyzed. A promising method is proposed for obtaining heat-resistant diffuse coatings on the alloy ХН55ВМТКЮ. The process of simultaneous saturation of the alloy surface with titanium, aluminum and chromium was realized in a mixture of metal powders, aluminum oxide Al2O3 and ammonium chloride NH4Cl. The phase and chemical compositions, structure, microhardness of diffuse multicomponent coatings based on titanium, aluminum and chromium, which are formed on the surface of alloy ХН55ВМТКЮ, are studied. It is shown that, as a result of titanium-alumochromination, a multi-phase multilayer coating is formed on the surface of the alloys, consisting of three zones: bond zones, columnar and transition zones. The microhardness of the corresponding zones varies in the range 3,8-10,8 GPa.

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