摘要
通过大气等离子体喷涂在GH4049薄壁合金上制备了纳米结构的ZrO_2-8%Y_2O_3热障涂层,分析了涂层的抗热震性能和热腐蚀性能。结果表明制备态的涂层为t'相;900℃热震150次后,表面裂纹开始快速生长;热腐蚀150 h后,表面出现束状的YVO_4产物。
The nanostructured ZrO_2-8% Y_2O_3 thermal barrier coatings were prepared on thin GH4049 alloy plate by air plasam spraying. Thermal shock and hot corrosion resistance properties were investigated. Results indicated that the as-sprayed coating was consisted of t＇ phase. Cracks on coating surface began to grow fastly after 150 cycling thermal shock at 900 ℃. The surface appeared the sheaf-like YVO_4 corrosion products after 150 h hot corrosion.
作者
卢有庆
梁欣宇
陈会杰
项小强
周长海
LU You-qing LIANG Xin-yu CHEN Hui-jie XIANG Xiao-qiang ZHOU Chang-hai(School of Materials Science and Technology, Heilongjiang Institute of Science and Technology, Harbin Heilongjiang 150022,China)
出处
《热处理技术与装备》
2016年第5期30-33,共4页
Heat Treatment Technology and Equipment
基金
黑龙江省教育厅自然科学研究项目(12543069)
国家自然基金项目(51501058)
关键词
热障涂层
等离子体喷涂
热震
热腐蚀
thermal barrier coating
plasma spraying
thermal shock
hot corrosion
