Tian-shun Dong, Ming Liu, Yang Feng, Guo-lu Li, and Xiao-bing Li, Microstructure and properties of a wear resistant Al–25Si–4Cu–1Mg coating prepared by supersonic plasma spraying, Int. J. Miner. Metall. Mater., 27(2020), No. 9, pp. 1287-1294. https://doi.org/10.1007/s12613-019-1950-2
Cite this article as:
Tian-shun Dong, Ming Liu, Yang Feng, Guo-lu Li, and Xiao-bing Li, Microstructure and properties of a wear resistant Al–25Si–4Cu–1Mg coating prepared by supersonic plasma spraying, Int. J. Miner. Metall. Mater., 27(2020), No. 9, pp. 1287-1294. https://doi.org/10.1007/s12613-019-1950-2
Research Article

Microstructure and properties of a wear resistant Al–25Si–4Cu–1Mg coating prepared by supersonic plasma spraying

+ Author Affiliations
  • Corresponding authors:

    Ming Liu    E-mail: hzaam@163.com

    Guo-lu Li    E-mail: liguolu0305@163.com

  • Received: 26 October 2019Revised: 17 December 2019Accepted: 20 December 2019Available online: 3 June 2020
  • A high content silicon aluminum alloy (Al–25Si–4Cu–1Mg) coating was prepared on a 2A12 aluminum alloy by supersonic plasma spraying. The morphology and microstructure of the coating were observed and analyzed. The hardness, elastic modulus, and bonding strength of the coating were measured. The wear resistance of the coating and 2A12 aluminum alloy was studied by friction and wear test. The results indicated that the coating was compact and the porosity was only 1.5%. The phase of the coating was mainly composed of α-Al and β-Si as well as some hard particles (Al9Si, Al3.21Si0.47, and CuAl2). The average microhardness of the coating was HV 242, which was greater than that of 2A12 aluminum alloy (HV 110). The wear resistance of the coating was superior to 2A12 aluminum alloy. The wear mechanism of the 2A12 aluminum alloy was primarily adhesive wear, while that of the coating was primarily abrasive wear. Therefore, it is possible to prepare a high content silicon aluminum alloy coating with good wear resistance on an aluminum alloy by supersonic plasma spraying.
  • *These authors contributed equally to this work.
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