WC/NiCrSiB复合覆层抗冲蚀气蚀性研究  

Slurry Erosion and Cavitation Erosion Resistance of WC/NiCrSiB Composite Coating

作　　者：康进兴[1] 赵文轸[1] 徐英鸽[2] 冀捐灶[3] 

机构地区：[1]西安交通大学材料科学与工程学院,陕西西安710049 [2]西安建筑科技大学机电学院,陕西西安710055 [3]空军工程大学工程学院,陕西西安710038

出　　处：《机械工程材料》2002年第11期30-32,共3页Materials For Mechanical Engineering

基　　金：国家自然科学基金(59831030)资助项目;国家重点基础研究专项经费资助项目(G19990650)

摘　　要：用氧乙炔焰喷焊法制备了NiCrSiB及其加入WC陶瓷颗粒的复合覆层材料,用光学显微镜分析了覆层的显微组织,并对覆层材料的浆体冲蚀和气蚀抗力进行了研究,用扫描电子显微镜对覆层表面气蚀破坏形貌进行了观察。结果表明:WC/NiCrSiB复合覆层材料不仅抗浆体冲蚀能力比基体材料有了很大的提高,而且耐气蚀性也有一定的提高。最后对覆层材料的浆体冲蚀和气蚀机理进行了分析。Coatings of NiCrSiB and WC/NiCrSiB composite were made by flame spray welding. Coating microstructures were observed with optical microscope. The slurry erosion and cavitation erosion resistance of the coatings have been investigated. The morphology after cavitation erosion were observed by means of SEM. The results show that not only the slurry erosion but also the cavitation erosion resistance of WC/NiCrSiB composite coating is higher than that NiCrSiB. The slurry erosion and cavitation erosion mechanisms of the tested coatings were also discussed in the paper.

关 键 词：WC/NiCrSiB复合材料 喷焊 浆体冲蚀 气蚀 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TB33[金属学及工艺—金属学]