纳米掺杂Al_2O_3/ZrO_2等离子喷涂涂层的组织及性能  

Microstructure and performance of nano-doping Al_2O_3/ZrO_2 plasma spray coatings

作　　者：李春福[1] 王斌[1] 王戎[2] 丁武成[1] 牛艳花[1] 朱泽华[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]中国石油大学(北京)化学化工学院,北京102249

出　　处：《中国有色金属学报》2007年第9期1397-1403,共7页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50372054)

摘　　要：利用自行研制的纳米掺杂AZ-20热喷涂粉末,采用大气等离子喷涂技术,在35号钢基体上制备Al2O3/ZrO2复合材料热障涂层,对涂层的组织结构及性能进行分析。结果表明:制备的涂层是由四方结构的t′-ZrO2与六方结构的α-Al2O3构成的,具有纳米晶与微米晶混晶组织;涂层孔隙率为11.2%,孔隙尺度较均匀;涂层硬度HV100为702,抗磨损能力较常规AZ-20涂层高约25%;涂层具有良好的隔热性能。The thermal barrier coating of A1203/ZrO2 composite coatings on 35^# steel substtate were prepared by the air plasma spraying with self-developed AZ-20 nano-doping thermal spray powder. The coating corlsists of cubic t＇-Zr02 and hexagonal structure a-A1203 in nanometer and micrometer; the coating has the uniform porosity of 11.2% and hardness HVi00 of 702. Its antiwear ability succeeds that of AZ-20 by about 25%; the coating has good thermal insulation performance.

关 键 词：A12O3/ZrO2 等离子喷涂 热障涂层 隔热性能 

分 类 号：TG174.442[金属学及工艺—金属表面处理]