摘要
采用多元Fe-Cr-Ni基合金(含Si、Co、B、Cu等)为喷涂粉末在不锈钢基体表面,用超音速火焰(HVOF)喷涂法制备厚度达200μm的涂层。采用金相显微镜、扫描电镜、X射线衍射仪对涂层的组织及相组成进行了研究,用显微硬度计和磁致伸缩汽蚀仪对涂层的性能进行了测试。结果表明,该涂层致密,颗粒分布均匀,其显微硬度是基体的5倍,达到1050HV0.1,靠近涂层的基体表面发生了加工硬化。涂层的抗汽蚀性明显优于ZG06Cr13Ni5Mo不锈钢,前者的质量损失约为后者的1/3。
The coating with 200 μm in thickness was prepared by high velocity oxygen fuel （HVOF） on the stainless substrate, which using multiple Fe-Cr-Ni based alloy （ Cr, Si, Co, B, Cu, etc） as spraying powder. The microstructures and phases composition of the coating were investigated by means of OM, XRD and SEM. The results show that the particles are distributed uniformly in the compact coating layer. The average micro-hardness of the coating reaches 1050 HV0. 1, as five times as that of the substrate. Work hardening occurrs in the substrate close to the coating. The cavitationresistance of coating is better than that of ZGO6Cr13Ni5Mo steel. The cavitation mass loss of the coating is just as 1/3 as that of ZGO6Cr13Ni5Mo steel.
出处
《金属热处理》
CAS
CSCD
北大核心
2008年第7期46-49,共4页
Heat Treatment of Metals
基金
江苏省自然基金项目(BK2007180)
关键词
超音速火焰喷涂
组织
抗汽蚀性能
high velocity oxygen fuel （HVOF） spraying
microstructure
cavitation erosion resistance
