This paper aims to explore the different oxidation behaviors of TiAlN coatings on two various substrates under thermal cycling at 750 °C. Thin oxide scale layer formed and Ti₂N phase generated in TiAlN-TC4 system. IDZ composed of nitride phase appeared at TiAlN/TC4 interface after thermal cycling. By contrast, for TiAlN on stainless steel, thick oxide scale layer formed on the surface. There were no phase transitions in TiAlN and IDZ at coating/substrate interface after oxidation. The various oxidation cracking behaviors also occurred to the two systems. The relative oxidation mechanisms are discussed in detail in this study.

中文翻译：

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热循环下TiAlN对钛合金和不锈钢的不同氧化行为研究

本文旨在探讨 TiAlN 涂层在 750 °C 热循环下在两种不同基材上的不同氧化行为。在 TiAlN-TC4 体系中形成薄氧化皮层并生成Ti ₂ N 相。热循环后，TiAlN/TC4 界面出现由氮化物相组成的 IDZ。相比之下，对于不锈钢上的 TiAlN，表面形成了厚厚的氧化皮层。氧化后，TiAlN 和 IDZ 在涂层/基材界面处没有相变。两种体系也发生了各种氧化裂解行为。本研究详细讨论了相关的氧化机制。