Structural-Phase State and Hardness of Composite Cu–Al Coatings Obtained by High-Speed Metallization Method

IF 0.7 Q3 Engineering

Surface Engineering and Applied Electrochemistry Pub Date : 2025-07-11 DOI:10.3103/S1068375525700218

V. A. Kukareko, M. A. Belotserkovskiy, A. N. Grigorchik, A. V. Sosnovskiy, E. V. Astrashab

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Abstract

The aim of the work was to study the structure, phase composition, and hardness of composite gas-thermal coatings of the Cu–Al system, sprayed by hypersonic metallization using industrial wire materials from welding bronze CuSi3Mn1 and aluminum alloy AlSi12. It is shown that interdiffusion occurs between the bronze and aluminum interlayers during the sprayed of coatings and the intermetallic compounds Cu₉Al₄, CuAl₂, and Cu₃Al are formed. The porosity of the sprayed coatings did not exceed ≈10 vol %. The hardness of the composite coatings was 180–190 HV 1, and their microhardness was 180–240 HV 0.025. It has been established that annealing coatings of the Cu–Al system at 175 and 225°С for 2 h leads to an increase in the content of intermetallic compounds in them as well as an increase in their microhardness to 260 HV 0.025. It is concluded that the composite coatings of the Cu–Al system, obtained by the method of hypersonic metallization, can be used as an antifriction material for friction pairs.

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高速金属化法制备Cu-Al复合镀层的结构、相态和硬度

研究了以铜CuSi3Mn1和铝合金AlSi12为焊材，采用高超声速金属化工艺喷涂Cu-Al复合气热涂层的组织、相组成和硬度。结果表明，在喷涂过程中，青铜层与铝层之间发生相互扩散，形成Cu9Al4、CuAl2和Cu3Al金属间化合物。喷涂涂层的孔隙率不超过≈10 vol %。复合镀层的硬度为180 ~ 190 HV 1，显微硬度为180 ~ 240 HV 0.025。结果表明，在175°和225°С温度下对Cu-Al体系进行2 h的退火处理后，Cu-Al体系的金属间化合物含量增加，显微硬度达到260 HV 0.025。结果表明，采用高超声速金属化方法制备的Cu-Al复合涂层可作为摩擦副的减摩材料。

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.60

自引率

22.20%

发文量

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.