Yb doping effects on CMAS corrosion resistance of Yb-doped GdPO4 by first-principles calculation and experimental investigation

被引：19
作者：
Guo, Lei [1 ]
Feng, Jiayi [1 ]
Liu, Mingguang [2 ]
Sun, Jingyong [3 ]
Yang, Shuo [4 ]
Jin, Lei [5 ]
Ye, Fuxing [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300072, Peoples R China
[2] Naval Logist Acad, Tianjin 300450, Peoples R China
[3] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[4] Tianjin Univ, Ctr Anal & Test, Tianjin 300072, Peoples R China
[5] AVIC Mfg Technol Inst, Sci & Technol Power Beam Proc Lab, Beijing 100024, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 218卷
关键词：
Thermal barrier coatings; CMAS; GdPO4; Yb doping effects; Interface reaction layer; First-principles calculation; THERMAL BARRIER COATINGS; YTTRIA-STABILIZED ZIRCONIA; TOTAL-ENERGY CALCULATIONS; BOND COAT; BEHAVIOR; DISSOLUTION; PROGRESS; YAG;
D O I：
10.1016/j.corsci.2023.111175
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GdPO4 is an attractive CMAS-resistant thermal barrier coating material due to the rapid GdPO4/CMAS reaction forming an interface reaction layer. However, this layer is weakly adhered to the GdPO4 surface weakening its function on inhibiting CMAS penetration. In this study, Yb-doped GdPO4 (Gd0.75Yb0.25PO4) was explored and its CMAS corrosion resistance was investigated. The Yb doping effects on the corrosion products formation enthalpy, the interface reaction layer construction and evolution, and the adhesion of the layer to Yb-doped GdPO4 were clarified based on first-principles calculation and experimental investigation. Yb-doped GdPO4 is verified to be more resistant to CMAS attack than GdPO4.
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页数：12
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