锆酸镧热障涂层的热震性能研究
Study on Thermal Shock Performance of La2Zr2O7 Thermal Barrier Coatings
孙文改, 王汉功, 孙淑玲
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作者单位:(第二炮兵工程学院, 陕西 西安 710025)
中文关键字:热障涂层;La2Zr2O7; ZrO2; 水淬法; 热震性能
英文关键字:thermal barrier coatings; La2Zr2O7; ZrO2; water hardening; thermal shock performance
中文摘要:利用多功能微弧等离子喷涂设备在1Cr18Ni9钢基体上制备La2Zr2O、ZrO2热障涂层。研究了La2Zr2O7和ZrO2涂层在高温实验条件下的热震性能,并进行了比较。结果表明, 在900 ℃室温水淬的实验条件下,La2Zr2O7热障涂层的热震性能较ZrO2涂层要好; 在1000、1100 ℃下二者的热震性能相差不大。
英文摘要:La2Zr2O7 and ZrO2 thermal barrier coatings were made on 1Cr18Ni9 substrate by multi micro-arc plasma instrument. The thermal shock performance of La2Zr2O7 and ZrO2 coating at high temperature was studied and compared. The results show that La2Zr2O7 thermal barrier coating has higher thermal shock performance compared with ZrO2 thermal barrier coatings at 900 ℃. They have close thermal shock performance at 1000 ℃ and 1100 ℃.