摘要
采用氧乙炔焰喷焊法制备了NiCrSiB及其加入Mo元素的覆层材料。用光学显微镜分析了覆层的金相组织 ,并对覆层材料抗固、液二相流体的冲蚀和气蚀性能进行了研究 ,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 :不同成分的镍基覆层材料抗固、液二相流体的冲蚀能力相近 ;加入Mo元素后形成的NiCrMoSiB覆层材料的耐气蚀能力得到提高。还对覆层材料的抗固、液二相流体的冲蚀和气蚀机理进行了分析。
Coatings of nickel\|based were made by flame spray welding, which erosion and cavitation corrosion resistance had been investigated in solid\|liquid two\|phase flow. Microstructures of coatings were observed by optical microscope and cavitation corrosion morphologies were observed by using SEM. Results showed that erosion resistances of nickel\|based coatings in solid\|liquid two\|phase flow were all similar. Cavitation corrosion resistances of NiCrMoSiB coatings were enhanced while adding Mo element. The erosion and cavitation corrosion mechanisms of coatings were also discussed.
出处
《材料保护》
CAS
CSCD
北大核心
2002年第6期9-11,共3页
Materials Protection
基金
国家自然科学基金资助项目 (5 98310 30 )
国家重点基础研究专项经费资助项目 (G19990 6 5 0 )
关键词
冲蚀
气蚀
喷焊
表面防护
erosion corrosion
cavitation corrosion
spray welding
surface protection
