基体类型对等离子熔覆含钒铁基涂层耐磨性的影响

Effect of matrix type on wear resistance of plasma clad V-containing Fe-based coating

使用粉末等离子堆焊设备在Q235钢板母材上制备了“铁素体+VC颗粒”(VC_(F))和“板条马氏体+VC颗粒”(VC_(M))两种组织形态的耐磨合金涂层,并分别对VC_(F)和VC_(M)涂层的显微组织、硬度、耐磨性和磨损形貌进行观察和测试。结果表明:VC_(F)涂层的显微组织为硬质相颗粒分布于铁素体中,VC_(M)涂层的显微组织为硬质相颗粒分布于板条状马氏体中,且VC_(M)涂层的硬度和耐磨性均高于VC_(F)涂层,表明涂层耐磨性的高低不单取决于硬质相的数量,还和涂层基体的组织类型有着较大关系。

Two kinds of wear-resistant alloy coatings with the microstructure of"ferrite+VC particles"(VC_(F))and"lath martensite+VC particles"(VC_(M))were prepared on the base metal of Q235 steel plate by using powder plasma surfacing equipment,and the microstructure,hardness,wear resistance and wear morphology of VC_(F) and VC_(M) coatings were observed,respectively.The results show that the microstructure of the VC_(F) coating is a ferrite distributed with hard phase particles,and the microstructure of the VC_(M)coating is a lath martensite distributed with hard phase particles.The hardness and wear resistance of the VC_(M) coating are higher than that of the VC_(F) coating,indicating that the wear resistance of the coatings not only depends on the number of hard phases,but also has a significant relationship with the microstructure type of the coalings matrix.