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.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
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)
