High-temperature oxidation and TGO growth behavior of Sr.9(Zr.9Yb.05Y.05)O2.85 thermal barrier coatings

被引：0
作者：
Feng, Xueying [1 ,2 ]
Zou, Min [4 ]
Liu, Jiong [3 ]
Lv, Liang [5 ]
Meng, Xiangfeng [6 ]
Bai, Yu [1 ]
Zheng, Fei [4 ]
Yu, Li [4 ]
Ma, Wen [1 ]
Gao, Yuanming [1 ,4 ]
机构：
[1] Inner Mongolia Univ Technol, Sch Mat Sci & Engn, Inner Mongolia Key Lab New Mat & Surface Engn, Hohhot 010051, Peoples R China
[2] Inner Mongolia Univ Technol, CPC Teachers Work Dept, Hohhot, Peoples R China
[3] Inner Mongolia Univ Technol, CPC Org Dept, Hohhot, Peoples R China
[4] Xichang Univ, Sch Sci, Xichang, Peoples R China
[5] Suzhou Vocat Univ, Sch Mech & Elect Engn, Suzhou, Peoples R China
[6] Jining Normal Univ, Sch Phys & Elect Informat Engn, Ulanqab, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2024年 / 21卷 / 06期
关键词：
bond coating; coating failure; high-temperature oxidation; SZYY-TBCs; TGO growth behavior; CORROSION BEHAVIOR; FAILURE MECHANISMS; YSZ; MICROSTRUCTURE; OXIDE; DURABILITY; COMPOSITES; RESISTANCE; CRACK;
D O I：
10.1111/ijac.14870
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High-temperature oxidation (1050 degrees C) of Sr-.9(Zr.9Yb.05Y.05)O-2.85 (SZYY) thermal barrier coatings (TBCs) by suspension plasma spraying (SPS) and growth behavior of thermally grown oxide (TGO) were investigated. When the TBCs were exposed to high temperature for a period of time (similar to 5 h), the BC oxidized and TGO inevitably formed between the bond coating (BC) and the ceramic top coating (TC). The high-temperature oxidation behavior of the BC is generally manifested as the growth of TGO, which has four specific stages as follows: (1) formative oxidation stage (0-10 h), (2) rapid oxidation stage (10-50 h), (3) stable oxidation stage (50-100 h), and (4) complex oxidation stage (100-200 h). The main component of early TGO is alpha-Al2O3. It has a very low oxygen ion diffusivity and provides an excellent diffusion barrier, which has a positive effect on preventing further BC oxidation. However, as the heat treatment time increased, the Al consumption and the formation of a CNS layer (NiO, Co3O4, and spinel) in the BC eventually led to coating failure. The working life of TBCs can be improved by improving the ceramic TC structure and the Al content of BC. SZYY-TBCs have certain potential application value.
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收藏
页码：4100 / 4113
页数：14
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