Effect of pre-oxidation on the failure mechanisms of EB-PVD thermal barrier coatings with (Ni,Pt)Al bond coats

被引：13

作者：

Li, S. ^{[1
]}

Xu, M. M. ^{[1
]}

Zhang, C. Y. ^{[1
]}

Bao, Z. B. ^{[1
,2
]}

Yang, Y. F. ^{[4
]}

Zhu, S. L. ^{[1
]}

Wang, F. H. ^{[3
]}

机构：

[1] Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China

[3] Northeastern Univ, Shenyang Natl Lab Mat Sci, Wenhua Rd 3, Shenyang 110819, Peoples R China

[4] Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, West Huangpu Rd 601, Guangzhou 510632, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 193卷

基金：

中国国家自然科学基金;

关键词：

Thermal barrier coatings; Platinum; Pre-oxidation; Intermixed zone; Failure mechanism; HIGH-TEMPERATURE; OXIDATION PERFORMANCE; ALUMINA SCALE; GROWN OXIDE; DURABILITY; ALPHA-AL2O3; KINETICS; BEHAVIOR; STRESS;

D O I：

10.1016/j.corsci.2021.109873

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to clarify the effect of pre-oxidation for (Ni,Pt)Al bond coat on failure modes of TBCs, cyclic oxidation behavior of thermal barrier coatings system with both pre-oxidized and normal (Ni,Pt)Al bond coats was investigated at 1100 degrees C. The results indicated that thermal cycling resistance of TBCs was dramatically enhanced by pre-oxidation, where thinner and lower residual stress oxide scale, lighter rumpling of the BC/TGO interface were achieved pre-oxidized. The failure modes of these two TBCs were completely diverse. Besides, the lower oxygen partial pressure effectively enhanced transformation from theta to alpha-Al2O3 during pre-oxidation.

引用

页数：11

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