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研究了在H13钢表面采用放电等离子烧结法制备Mo2FeB2系三元硼化物基金属陶瓷覆层的组织及耐磨性,分析了覆层与钢基底界面形成的特点,覆层的硬度分布及磨损机制。结果表明,在1050℃烧结,保温5 min时,可获得相对密度为99.2%的三元硼化物(Mo2FeB2)基金属陶瓷覆层,显微硬度达1400 HV,覆层和钢基体的结合处存在一个过渡层。由于硬质相的抗磨作用得到充分发挥,该覆层具有良好的耐磨性。
The microstructure and wear resistance of Mo2FeB2-based ternary boride-based cermets prepared by spark plasma sintering on H13 steel were studied. The formation characteristics of the interface between the coating and the steel substrate were analyzed. The hardness distribution and wear mechanism . The results show that at a temperature of 1050 ℃ for 5 min, a Mo2FeB2-based cermet coating with a relative density of 99.2% can be obtained with a microhardness of 1400 HV. The bond between the coating and the steel substrate exists A transitional layer. Due to the anti-wear effect of the hard phase is fully exerted, the coating has good wear resistance.