Foreign object damage behavior and failure mechanism of Al2O3-modified TBCs prepared by PS-PVD

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-07-01 DOI:10.1016/S1003-6326(24)66541-6

Zi-fan WANG , Jia-feng FAN , Kai-wen KANG , Jian WU , Min LIU , Ke-song ZHOU , Qian ZHANG , Zhi-bo ZHANG , Xiao-qiang LI , Xiao-feng ZHANG

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Abstract

Particle erosion induced by foreign object damage (FOD) is an important factor that restricts the working life of thermal barrier coatings (TBCs). A dense α-Al₂O₃ overlay was prepared by magnetron sputtering and vacuum treatment on the surface of 7YSZ TBCs sprayed by plasma spray-physical vapor deposition (PS-PVD) to improve the erosion resistance of the TBCs. The FOD behavior of the TBCs was systematically studied and the interface of α-Al₂O₃/c-ZrO₂ was investigated by first principles calculations. The experimental results show that the erosion rates of the PS-PVD, atmospheric plasma spraying (APS), and electron beam-physical vapor deposition (EB-PVD) TBCs were 324, 248, and 139 μg/g, respectively, while the erosion rate of the Al₂O₃-modified PS-PVD TBCs was reduced to 199 μg/g. In addition, the highest interface adhesive energy of 3.88 J/m² observed in the top configuration model of Al₂O₃/ZrO₂−O is much higher than that of ZrO₂/Ni (2.011 J/m ²), which results in improved interface bonding performance.

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PS-PVD 法制备的 Al2O3 改性 TBC 的异物损伤行为和失效机理

异物损伤（FOD）引起的微粒侵蚀是限制热障涂层（TBC）工作寿命的一个重要因素。通过磁控溅射和真空处理，在等离子喷涂-物理气相沉积（PS-PVD）喷涂的 7YSZ 热障涂层表面制备了致密的 αAl2O3 涂层，以提高热障涂层的抗侵蚀能力。系统研究了 TBC 的 FOD 行为，并通过第一性原理计算研究了 α-Al2O3/c-ZrO2 的界面。实验结果表明，PS-PVD、大气等离子喷涂（APS）和电子束-物理气相沉积（EB-PVD）TBC 的侵蚀率分别为 324、248 和 139 μg/g，而 Al2O3 改性 PS-PVD TBC 的侵蚀率则降至 199 μg/g。此外，在 Al2O3/ZrO2-O 顶部构型模型中观察到的最高界面粘合能为 3.88 J/m2，远高于 ZrO2/Ni 的界面粘合能（2.011 J/m 2），从而改善了界面粘合性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.