WC-10Co4Cr/WC-10Ni耐磨耐腐蚀涂层制备与研究

Preparation and Study of Wear-Resistant and Corrosion-Resistant WC-10Co4Cr/WC-10Ni Coating

摘要:

以WC-10Co4Cr和WC-10Ni粉末为原料，利用超音速火焰喷涂在304不锈钢基体上制备WC-10Co4Cr和WC-10Ni涂层。同时，利用显微硬度计、扫描电镜、万能力学试验机、磨耗试验机和盐雾试验机等手段，分析涂层的力学性能和耐磨耐腐蚀性能。结果表明：WC-10Co4Cr涂层和WC-10Ni涂层与基体结合牢固，组织致密；WC-10Co4Cr涂层的硬度更高，结合强度和耐磨性更强于WC-10Ni涂层；WC-10Ni涂层的耐盐雾腐蚀性能，更优于WC-10Co4Cr涂层。

Abstract:

This article uses WC-10Co4Cr and WC-10Ni powders as raw materials and adopts supersonic flame spraying to prepare WC-10Co4Cr and WC-10Ni coatings on 304 stainless steel substrates. The mechanical properties and wear and corrosion resistances of the coating are analyzed by using microhardness tester， scanning electron microscopy， universal mechanical testing machine， wear testing machine， and salt spray testing machine. The results show that the WC-10Co4Cr coating and WC-10Ni coating are firmly bonded to the substrate and have dense microstructures. The WC-10Co4Cr coating has a higher hardness， stronger bonding strength， and wear resistance than the WC-10Ni coating， and the salt spray corrosion resistance of the WC-10Ni coating is better than that of the WC-10Co4Cr coating.