将铬铁粉、铁铝粉和钬粉按40%:40%:20%的比例混合,制成复合粉末,采用热喷涂-激光复合工艺在304不锈钢基材表面制备CrFeAlTiC金属/玻璃陶瓷涂层。借助光学显微镜、扫描电镜、能谱仪对涂层的宏观形貌、微观结构和组成成分进行了分析,并研究了其界面结合性能。结果表明:经激光处理得到的涂层厚度为20~30pm,表面较为平整、致密,且与基材呈良好的冶金结合;试样拉伸5%时,没有出现裂纹与涂层脱落的现象,涂层与304不锈钢基材界面结合性能较好。
In this paper, firstly, the composite powder was made of the CrFe, FeAl and Ti powder by the proportion of 40% :40% : 20% . Then, CrFeAlTiC metal/glass ceramic coating was prepared through thermal spraying-laser composite technology on the surface of 304 stainless steel substrate. Macro morphology, microstructure and components of coating were analyzed by means of the optical microscope, the scanning electron microscope and the energy spectrometer. The interface bonding performance has also been studied. Results showed that the coating thickness was only 20 ~ 30 jjim after laser treatment. In addition,it had a relative smooth and dense surface, and metallurgically combined well with the base material. Moreover, once the sample was stretched by 5% , both crack and coating peeling were not detected, and the coating bonding with the interface of 304 stainless steel substrate with good performance.