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采用高频感应熔覆的方法在42CrMo钢基体表面获得微米WC-12Co涂层,并用电子显微镜、显微硬度计研究了熔覆层的显微组织、硬度,并通过抗热震试验分析了熔覆层与基体的结合强度,同时研究了该熔覆层的耐腐蚀性。结果表明:该熔覆层组织均匀,与基体结合强度高,耐腐蚀性好,硬度为970 HV0.5,分布较为均匀。
The WC-12Co coating was obtained on the surface of 42CrMo steel by high frequency induction cladding method. The microstructure and hardness of the coating were studied by electron microscope and microhardness tester. The melting resistance The bonding strength between the coating and the substrate, and the corrosion resistance of the coating was also studied. The results show that the coating has uniform microstructure, high bond strength with matrix, good corrosion resistance, hardness of 970 HV0.5, and uniform distribution.