纳米Y-PSZ基高温封严涂层微观结构的研究  

Study on Microstucture of Nano Y-PSZ Based Seal Coating

作　　者：肖巍[1,2] 闵捷[1,2] 孟令娟[1,2] 张琦[1,2] 叶菲[2] 叶卫平[2] 程旭东[1,2] 

机构地区：[1]材料复合新技术国家重点实验室,武汉430070 [2]武汉理工大学,武汉430070

出　　处：《表面技术》2010年第3期37-39,共3页Surface Technology

摘　　要：采用大气等离子喷涂(APS)工艺制备了纳米氧化钇部分稳定的氧化锆(Y-PSZ)基高温封严涂层,对涂层的元素分布、孔隙率及孔隙分布等微观结构特征进行了研究,探讨了高分子聚合物(高聚物)的造孔机理。结果表明:涂层的成分均匀,纳米Y-PSZ对h-BN具有良好的包覆效果,在高聚物烧蚀后的涂层中留下均匀分布的孔隙,涂层的孔隙率可达33.0%。The nano yttria partially stabilized zirconia（Y-PSZ） based seal coating was prepared by air plasma spraying（APS） process.The microstructures including element distribution and porosity of seal coating were analyzed.In particular,the pore-forming mechanism of polymer was studied.Experimental results reveale that the composition of coating distributes evenly,the h-BN is fine embodied by nano Y-PSZ,uniformly distributed pores are left after polymer burn out,and the porosity can be up to 33.0%.

关 键 词：封严涂层 微观结构 Y-PSZ 

分 类 号：TG174.442[金属学及工艺—金属表面处理]