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利用等离子喷涂法在发动机铝合金活塞上制得 Ni Cr Al Co Y与用质量分数为 8%的 Y2 O3 稳定的 Zr O2 梯度热障层。经热震实验、金相分析、SEM分析和 TEM分析 ,结果表明该热障层具有良好的抗热冲击性和高温热稳定性 ,并且 Ni Cr Al Co Y与 Zr O2 间形成了化学键结合。这为今后解决TBCs可靠性的问题提出了新的思路
Ni Cr Al Co Y and Y 2 O 3 stabilized Zr O 2 gradient thermal barrier layers were prepared by plasma spraying on the engine aluminum piston. The results of thermal shock test, metallographic analysis, SEM analysis and TEM show that the thermal barrier layer has good thermal shock resistance and high temperature thermal stability, and the chemical bond between Ni Cr Al Co Y and Zr O2 is formed. This put forward new ideas for the future to solve the reliability of TBCs