Research status on the corrosion resistance of rare earth hafnates used in thermal/environmental barrier coatings
YU Xiaofeng1,2, SHI Pingping1, ZHAO Danyang1, WU Xiaozan1,2
1. Central South University Science-Tech Park Development Co., Ltd, Changsha 410083, China; 2. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
Abstract：Rare earth hafnates exhibit low thermal conductivity, high melting point, excellent high-temperature phase stability, and robust environmental corrosion resistance, offering promising applications in thermal/environmental barrier coatings for new-generation aero-engine hot-end parts. This paper focuses on the elaboration of rare earth hafnate materials as environmental barrier coatings, summarises the research progress in water vapor, molten CaO-MgO-Al2O3-SiO2, molten salt, and coupled environment of water vapor and molten CaO-MgO-Al2O3-SiO2 corrosion resistance, and outlines its future development direction.
喻晓峰, 史平平, 赵丹阳, 伍晓赞. 热/环境障涂层用稀土铪酸盐的抗腐蚀性能研究现状[J]. 粉末冶金材料科学与工程, 2025, 30(4): 261-271.
YU Xiaofeng, SHI Pingping, ZHAO Danyang, WU Xiaozan. Research status on the corrosion resistance of rare earth hafnates used in thermal/environmental barrier coatings. Materials Science and Engineering of Powder Metallurgy, 2025, 30(4): 261-271.
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2025, Vol. 30 
