工业汽轮机阀杆超音速火焰喷涂的研究  

HVOF on the Valve Spindle of Industrial Steam Turbine

作　　者：刘中华[1] 宋思远[1] 

机构地区：[1]杭州汽轮动力集团有限公司,浙江杭州310003

出　　处：《机电工程技术》2015年第3期18-21,共4页Mechanical & Electrical Engineering Technology

基　　金：杭州市产学研资助项目(编号:20082831E04)

摘　　要：采用超音速火焰喷涂球形烧结态Cr3C2-25%Ni Cr复合粉末制备高温耐磨损涂层,分析了涂层的显微组织结构,测试了涂层的结合强度、硬度和耐磨性能,结果表明:涂层中以Cr3C2为主的颗粒增强相弥散分布在Ni Cr固溶体中,涂层的显微硬度比基体(2Cr12Mo V)提高了3倍多,摩擦磨损性能也有明显提高。The resistant high temperature abrasion coating is prepared by high velocity oxygen fuel sprayed spheroid sintered Cr3C2-25% NiCr composite powder, and microstruettlre, bond strength, microhardness, friction and wear properties of the coatings were examined. Results show that main phase in the coating is Cr3C2 particles distributing in the NiCr solid solution. The mierohardness of coating is above three times more than that of 2Crl2MoV alloys, and the friction and wear properties of 2Crl2MoV alloy is enhanced greatly.

关 键 词：超音速火焰喷涂 阀杆 涂层 显微组织 摩擦磨损性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]