Microstructure evolution of thermally grown Al2O3 on NiCrAlY bonding coating for high-temperature thin-film sensors

Thermal stability is an important aspect of thermally grown alumina (TGA) for high-temperature thin-film sensors on nickel-based superalloys. In this paper, a thermodynamic coupled model was used to calculate the vacuum diffusion and the oxidation of aluminum atoms in NiCrAlY bonding coatings (BCs)....

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Veröffentlicht in:	Journal of alloys and compounds 2022-12, Vol.929, p.167321, Article 167321
Hauptverfasser:	Liu, Yang, Jiang, Hongchuan, Zhao, Xiaohui, Liu, Baorui, Jia, Zhouxia, Deng, Xinwu, Zhang, Wanli
Format:	Artikel
Sprache:	eng
Schlagworte:	Al atoms diffusion Al2O3 phase transition Aluminum oxide Bonding Chemical bonds Diffusion coatings Diffusion layers High temperature Insulation Magnetron sputtering Nickel base alloys NiCrAlY bonding coating Oxidation Oxygen Partial pressure Platinum Sensors Superalloys Thermal cycling Thermal cycling tests Thermal stability Thermally grown Al2O3 Thermocouples Thickness Thin films Thin-film thermocouples Transitional aluminas Turbine blades Vacuum diffusion
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