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<p>This study investigates the wear resistance of cold-sprayed CuSn<sub>5</sub>/WC-9Co composite coating, fabricated by blending various mass ratios of WC-9Co hard particles with annealed CuSn<sub>5</sub> powder. The experimental results show that the addition of WC-9Co hard particles reduces the porosity of the coating and improves its hardness. As the WC-9Co content increases, both the average friction coefficient and the weight loss of the composite coating initially increase and then decrease. At a content of 30 wt% WC-9Co, the coating achieves an average cross-sectional hardness of 264.8 HV<sub>0.5</sub> and an average friction coefficient of 0.364.</p> Graphical abstract <p></p>

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Microstructure evolution and wear mechanism of CuSn5/WC-9Co coatings fabricated by low-pressure cold spray

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Shihui Wang,
  • Junhe Miao,
  • Yanjie Jiang,
  • Xiaolei Wang,
  • Dongxu Chang,
  • Li Zheng,
  • Huiwen Zhu

摘要

This study investigates the wear resistance of cold-sprayed CuSn5/WC-9Co composite coating, fabricated by blending various mass ratios of WC-9Co hard particles with annealed CuSn5 powder. The experimental results show that the addition of WC-9Co hard particles reduces the porosity of the coating and improves its hardness. As the WC-9Co content increases, both the average friction coefficient and the weight loss of the composite coating initially increase and then decrease. At a content of 30 wt% WC-9Co, the coating achieves an average cross-sectional hardness of 264.8 HV0.5 and an average friction coefficient of 0.364.

Graphical abstract