WC对CuNiSiB喷焊覆层材料耐气蚀性的影响  

Effect of WC on Cavitation Erosion Resistance of Spray Welding Coating of CuNiSiB Alloy Powder

作　　者：康进兴[1] 赵文轸[2] 肖洁[1] 

机构地区：[1]空军工程大学工程学院,西安710038 [2]西交通大学金属材料强度国家重点实验室,西安710049

出　　处：《材料科学与工程》2002年第1期44-46,共3页Materials Science and Engineering

基　　金：国家自然科学基金资助项目 (59831 0 30 )

摘　　要：在CuNiSiB自熔合金粉末中添加不同量的硬质WC陶瓷颗粒 ,利用氧乙炔焰粉末喷焊工艺制备覆层材料 ,用超声波振动气蚀仪对覆层材料进行耐气蚀性能实验 ,用扫描电子显微镜对覆层表面气蚀破坏形貌进行观察。结果表明 :复合覆层材料的耐气蚀能力比基体强 ,且随着WC颗粒加入量的增加 ,耐气蚀能力逐渐增大 ;提高CuNiSiB覆层材料耐气蚀能力的途径是强化晶界。Different content WC particle were added in CuNiSiB self\|fluxing alloy powder.The coating were made by using flame spray welding method.The cavitation ersoion were inverstigated by ultrasonic vibration cavitation equipment.The cavitation erosion morphology were observed by SEM.Results showed that the cavitation erosion resistance of composite coating is better than CuNiSiB alloy,and enhance with increasing WC content.That raising cavitation erosion resistance of CuNiSiB coating method is to reinforce grain boundary.Cavitation erosion mechanisms of the test coatings were also discussed.

关 键 词：WC 复合材料 喷焊 表面防护 气蚀 CuNiSiB自熔合金 耐气蚀性 陶瓷覆层 水轮机 

分 类 号：TG174.453[金属学及工艺—金属表面处理] TM312[金属学及工艺—金属学]