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JOURNALS // Prikladnaya Mekhanika i Tekhnicheskaya Fizika // Archive

Prikl. Mekh. Tekh. Fiz., 2022 Volume 63, Issue 3, Pages 152–160 (Mi pmtf60)

This article is cited in 1 paper

Effect of high-temperature treatment of bronze particles on the characteristics of coatings formed by the method of cold gas-dynamic spraying

A. E. Chesnokov, S. V. Klinkov, V. F. Kosarev, A. V. Smirnov, V. S. Shikalov, T. M. Vidyuk

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, 630090, Novosibirsk, Russia

Abstract: Effect of preliminary heat treatment of CuAl$_{10}$Fe$_3$Mn$_2$ bronze particles in the working chamber of a furnace with varying atmosphere on the process of applying coatings by cold gas-dynamic spraying and their properties is experimentally studied. It is shown that an temperature rise in the working chamber of the furnace reduces the microhardness of the material from $\mathrm{HV}_{0.025} = 240$ to $\mathrm{HV}_{0.025} = 115$. It is noted that the spraying process is accompanied by an increase in the specific mass of the coatings from 1.62 to 3.50 kg/m$^2$. It is shown by the study of the surface structure and physical characteristics that, for the coatings obtained from the original bronze powder, porosity is 2%, the arithmetic mean of the absolute values of profile deviations within the base length $\mathrm{Ra} = 27$ m, and microhardness is $\mathrm{HV}_1 = 250$. For the coatings obtained from heat-treated bronze powder, porosity is 5%, $\mathrm{Ra} = 21$ m, and microhardness is $\mathrm{HV}_{0.1} = 300$.

Keywords: cold gas-dynamic spraying, bronze coatings, muffle vacuum furnace, microhardness, porosity, coherent scattering region, X-ray phase analysis.

UDC: 66.017:66.018.2

Received: 19.02.2021
Revised: 16.03.2021
Accepted: 29.03.2021

DOI: 10.15372/PMTF20220315


 English version:
Journal of Applied Mechanics and Technical Physics, 2022, 63:3, 505–513

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© Steklov Math. Inst. of RAS, 2024