Oxidation behavior of the nanocrystalline coatings with different Al or/and Cr contents at 1050 °C is investigated. The results indicate that increasing the Al content in nanocrystalline coatings can reduce the negative effect of Ta, improve the purity and integrity of the Al₂O₃ scale, and strengthen the oxidation resistance of the coatings. However, Cr in the nanocrystalline coating will promote its diffusion to the single crystal superalloy, destroy its stability, and lead to the formation of IDZ and SRZ.

中文翻译：

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Al和Cr对1050°C纳米晶涂层氧化行为的影响

研究了不同Al或/和Cr含量的纳米晶涂层在1050°C下的氧化行为。结果表明，增加纳米晶涂层中的Al含量可以降低Ta的负面影响，提高Al ₂ O ₃氧化层的纯度和完整性，增强涂层的抗氧化性。然而，纳米晶涂层中的Cr会促进其向单晶高温合金的扩散，破坏其稳定性，导致形成IDZ和SRZ。