超音速等离子喷涂WC-Co涂层性能研究  

Study on the Performance of Supersonic Plasma Sprayed WC-12Co Coatings

作　　者：王海军[1] 韩志海[1,2] 王建[1] 蔡江[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072 [2]西安交通大学金属材料强度国家重点实验室,西安710049

出　　处：《装甲兵工程学院学报》2006年第1期85-89,共5页Journal of Academy of Armored Force Engineering

基　　金：国家自然科学基金项目(90305023)

摘　　要：用超音速等离子喷涂（HEPJet）和2种进口高速氧燃气火焰喷涂设备（HVOF：JP-5000和DJ-2700）制备WC—Co涂层，进行了孔隙率、显微硬度、结合强度及30°和90°攻角的冲蚀磨损对比试验，用XRD分析了粉末和涂层的相结构，用SEM分析了粉末和涂层的表面和断面形貌。结果表明3种工艺制备的WC-Co涂层与粉末的相结构类似，均无明显氧化、失碳；超音速等离子喷涂WC-Co涂层综合性能与JP-5000相当，要优于DJ-2700。WC-Co coatings are prepared by using the supersonic plasma spray （ HEPJet ） and two kinds of imported high speed oxygen burn equipment of flame spraying （ HVOF： JP-5000 and D J-2700） ; Comparison tests are carried out on hole rate, microscopically hardness, combination strength and 30° with 90° attack angle rush ; the appearance structure of powder and coatings are analyzed with XRD ; and the section shape, surface of powder and coating are analyzed with SEM. The results show that the surface structures of powder and the WC-Co coatings of 3 kinds of technology preparation are similar without obvious oxidize and carbon lose. The integral performance of supersonic plasma spray WC - Co coating matches with that of JP - 5000 and is fairly better than DJ-2700.

关 键 词：超音速等离子喷涂 HVOF WC-CO涂层 

分 类 号：TG174.453[金属学及工艺—金属表面处理]