TiC-VC-Mo2C颗粒增强铁基激光熔覆层的研究  

Research on Fe- based Composite Coating Reinforced by TiC-VC-Mo2C Particles

作　　者：孔令海[1] 王晓荣[2] 王新洪[2] 曲仕尧[2] 

机构地区：[1]济南大学土木建筑工程学院,济南250022 [2]山东大学材料科学与工程学院,济南250061

出　　处：《现代制造技术与装备》2010年第3期31-32,34,共3页Modern Manufacturing Technology and Equipment

基　　金：山东省科技攻关计划项目(06GG3203009)

摘　　要：采用激光熔覆技术在Q235钢表面制备TiC-VC-Mo2C颗粒增强Fe基复合涂层。借助X射线衍射仪、扫描电镜、显微硬度计、滑动磨损试验机,研究了复合涂层的显微组织和性能。研究表明:复合涂层物相包括α-Fe、γ-Fe、Fe3C和TiC-VC-Mo2C,其中陶瓷相以细小粒状均匀分布于涂层,起到了颗粒增强的作用。复合涂层的平均显微硬度达1102.5HV0.3,具有优异的耐磨性,在相同试验条件下,复合涂层的磨损失重仅约为基材的1/20,其磨损机制主要为显微切削和区域性粘着磨损。Microstructure and properties of Fe-Ti-V-Mo-C composite coating produced on Q235 steel by laser cladding were investigated byuse of XRD, SEM, micro-hardness and sliding wear tester. Results showed that the phase structure of composite coating was consisted of α-Fe, γ-Fe, Fe3C, TiC-VC-Mo2C. The generation of ceramic particles, with equal distribution in the coating, played a crucial role in particle reinforcement. Average micro-hardness of composite coating arrived at 1102.5HV0.3, thus the coating was provided with excellent wear properties. The weight loss of composite coating was only one twentieth of that of substrate under the same test condition and the abrasion mechanism of the coating was micro-cutting and local adhesive wear.

关 键 词：激光熔覆 Fe—Ti-V—Mo—C 复合涂层 显微组织 耐磨性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]