Abstract Thermal cycling behavior of thermal barrier coatings deposited on Hf-doped (Ni,Pt)Al bond coats were investigated, comparing with conventional (Ni,Pt)Al at 1100 °C, to elucidate the effect of Hf addition into (Ni,Pt)Al bond coat on failure mode of TBCs. The results revealed that thermal cycling resistance of TBCs was significantly improved with addition of Hf, where relatively lower oxidation rate constant and decreased scale rumpling tendency were achieved. The effects of Hf incorporation on scale rumpling tendency and failure modes of the TBCs were discussed. Moreover, residual stress, Young’s modulus and hardness in top coat were determined with increasing thermal cycles.

中文翻译：

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(Ni,Pt)Al 结合涂层中 Hf 添加对热障涂层系统 1100 °C 热循环行为的影响

摘要 研究了沉积在掺 Hf 的 (Ni,Pt)Al 粘结涂层上的热障涂层的热循环行为，并与传统的 (Ni,Pt)Al 在 1100 °C 进行比较，以阐明 Hf 添加到 (Ni,Pt )关于 TBC 失效模式的铝键涂层。结果表明，随着 Hf 的加入，TBCs 的抗热循环性显着提高，其中实现了相对较低的氧化速率常数和降低的结垢倾向。讨论了掺入 Hf 对 TBC 结垢倾向和失效模式的影响。此外，面漆中的残余应力、杨氏模量和硬度随着热循环的增加而确定。