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<p>To explore the effect of B and nano-TiC on FeCoCrNiCu coatings, based on previous studies, FeCoCrNiCuB<sub>0.5</sub> and FeCoCrNiCu-15TiC were fabricated on Q235 substrate by laser cladding method. After coatings were prepared, the tissue phase and elemental distribution of the coating were analyzed by XRD, SEM, EDS. The coating was carried out by friction loss tester at room temperature to characterize its friction reduction performance and wear resistance, and to study the main loss behavior mechanism by characterizing the coating and surface morphology of wear against the grinding ball. Analytical results show that B and nano-TiC are able to refine grain and enhance metallurgical bonding properties of coatings. The apparent microhardness of FeCoCrNiCu (HEA), FeCoCrNiCuB<sub>0.5</sub>(B5), and FeCoCrNiCu-15wt.%TiC(T15) coatings is 217.95, 343.98, and 531.65HV<sub>0.5</sub>, respectively. At room temperature, the B5 coating has the lowest coefficient of friction (COF), 0.425, and wear mechanisms are mainly abrasive and fatigue. T15 coating has a coefficient of friction (COF) of only 0.549 and a more polished surface, where abrasive wear is the main wear mechanism.</p>

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Effect of B and Nano-TiC on the Tribological Properties of High-Entropy Alloy FeCoCrNiCu Coatings

  • 期刊论文

  • 发表日期：

    2025年4月15日

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  • Zhi-Wen Wang,
  • Hong-Liang Zhao,
  • Jing-Jing Niu,
  • Jia-Le Li,
  • Jin-Peng Zhu,
  • Kai-Ming Wang,
  • Xiu-Bo Liu

摘要

To explore the effect of B and nano-TiC on FeCoCrNiCu coatings, based on previous studies, FeCoCrNiCuB0.5 and FeCoCrNiCu-15TiC were fabricated on Q235 substrate by laser cladding method. After coatings were prepared, the tissue phase and elemental distribution of the coating were analyzed by XRD, SEM, EDS. The coating was carried out by friction loss tester at room temperature to characterize its friction reduction performance and wear resistance, and to study the main loss behavior mechanism by characterizing the coating and surface morphology of wear against the grinding ball. Analytical results show that B and nano-TiC are able to refine grain and enhance metallurgical bonding properties of coatings. The apparent microhardness of FeCoCrNiCu (HEA), FeCoCrNiCuB0.5(B5), and FeCoCrNiCu-15wt.%TiC(T15) coatings is 217.95, 343.98, and 531.65HV0.5, respectively. At room temperature, the B5 coating has the lowest coefficient of friction (COF), 0.425, and wear mechanisms are mainly abrasive and fatigue. T15 coating has a coefficient of friction (COF) of only 0.549 and a more polished surface, where abrasive wear is the main wear mechanism.