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Tribotechnical Properties of Cu–Al Antifriction Gas Thermal Coatings in Liquid and Grease Lubricants

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Abstract—

The study of the structural-phase state and tribotechnical properties of antifriction gas-thermal coatings made of aluminum alloy AlSi12, welding bronze CuSi3Mn1, as well as composite material CuSi3Mn1 + AlSi12 and a coating of bronze CuSn10P1 obtained by centrifugal induction surfacing was carried out. It is shown that composite gas-thermal coatings from CuSi3Mn1 + AlSi12 after spraying include Cu, Al, Cu9Al4, CuAl2, Cu3Al, Si, and Al2O3 phases. The matrix phase of the bronze interlayers is doped with aluminum, while the Al interlayers are doped with copper. It has been established that annealing of coatings CuSi3Mn1 + AlSi12 at temperatures of 175 and 225°С for 2 h leads to the release of an additional amount of intermetallic compounds in them and an increase in their microhardness. It is shown that composite gas-thermal coatings have ≈1.2–1.7 times higher wear resistance in the environment of I-20A and Litol-24 lubricants compared to coatings of CuSn10P1 bronze. Annealing of composite coatings from CuSi3Mn1 + AlSi12 leads to an increase in their wear resistance in the environment of I-20A liquid lubricant up to 30% and Litol-24 up to 20% compared to the initial state. The coefficients of friction of all antifriction coatings based on copper in the environment of the I-20A lubricant did not exceed 0.08, and in the environment of the Litol-24 lubricant, 0.10.

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Funding

The work was carried out within the framework of the project of the Belarusian Republican Foundation for Basic Research no. Т23М-041 (2023–2025).

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Authors and Affiliations

  1. Joint Institute of Mechanical Engineering, National Academy of Sciences of Belarus, 220012, Minsk, Belarus

    A. N. Grigorchik, V. A. Kukareko, M. A. Belotserkovsky, A. V. Sosnovskiy & E. V. Astrashab

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  1. A. N. Grigorchik
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  2. V. A. Kukareko
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  3. M. A. Belotserkovsky
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  4. A. V. Sosnovskiy
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  5. E. V. Astrashab
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Correspondence to E. V. Astrashab.

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Grigorchik, A.N., Kukareko, V.A., Belotserkovsky, M.A. et al. Tribotechnical Properties of Cu–Al Antifriction Gas Thermal Coatings in Liquid and Grease Lubricants. J. Frict. Wear 44, 266–271 (2023). https://doi.org/10.3103/S1068366623050033

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  • DOI: https://doi.org/10.3103/S1068366623050033

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