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<p>In this study, WC-Fe-based gradient coating was prepared on the surface of 45 steel by high-speed laser cladding technology, and its friction and wear characteristics under different temperatures and loads were systematically studied. The results show that at room temperature, the wear loss of the iron-based gradient coating is only one fifth of that of the substrate, the friction coefficient is low, and the wear mechanism is mainly abrasive wear. At 600&#xa0;°C, the coating exhibits a stable friction coefficient, and the wear loss is lower than that of 45 steel. The wear mechanisms include abrasive wear, slight adhesive wear, plastic smearing and oxidation wear. Under different loads, the wear loss of the iron-based gradient coating is the largest at 150 N and the smallest at 200 N. Temperature and load significantly affect the wear amount and friction coefficient of the coating, indicating that the coating has excellent wear resistance at high temperature and under different load conditions.</p>

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Research on the Friction and Wear Properties of Laser Cladding WC-Fe-Based Coatings

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Yan Chuncheng,
  • Yin Ziqiang,
  • Li Yitong,
  • Cao Youhong,
  • Xia Dianxiu

摘要

In this study, WC-Fe-based gradient coating was prepared on the surface of 45 steel by high-speed laser cladding technology, and its friction and wear characteristics under different temperatures and loads were systematically studied. The results show that at room temperature, the wear loss of the iron-based gradient coating is only one fifth of that of the substrate, the friction coefficient is low, and the wear mechanism is mainly abrasive wear. At 600 °C, the coating exhibits a stable friction coefficient, and the wear loss is lower than that of 45 steel. The wear mechanisms include abrasive wear, slight adhesive wear, plastic smearing and oxidation wear. Under different loads, the wear loss of the iron-based gradient coating is the largest at 150 N and the smallest at 200 N. Temperature and load significantly affect the wear amount and friction coefficient of the coating, indicating that the coating has excellent wear resistance at high temperature and under different load conditions.