Enhanced structural stability and oxidation resistance of NiCoCrAlY bonding layer via Al addition

被引：3

作者：

Liu, Tianxin ^{[1
]}

Zhang, Dalu ^{[1
]}

Wang, Zhiguo ^{[1
]}

Xiang, Lin ^{[2
]}

Zhao, Yanhui ^{[3
,5
]}

Hu, Suying ^{[1
]}

Huang, Bo ^{[2
]}

Xie, Zhiwen ^{[1
,4
]}

机构：

[1] Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China

[2] Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

[4] 185 Qianshan Midrd,Hitech Zone, Anshan, Liaoning, Peoples R China

[5] 72 Wenhua Rd, Shenyang, Liaoning, Peoples R China

来源：

VACUUM | 2023年 / 207卷

关键词：

NiCoCrAlY bonding Layer; Al doping; Diffusion; Structural stability; Oxidation resistance; MICROSTRUCTURAL EVOLUTION; COAT; TBC;

D O I：

10.1016/j.vacuum.2022.111543

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel Al doping was designed to enhance the structural stability and oxidation resistance of NiCoCrAlY bonding layer. Results showed that NiCoCrAlY without Al doping suffered from severe elemental inter-diffusion and rapid growth of (Ni, Co)Cr2O4 spinel during high-temperature exposure, leading to poor structural stability and a high oxidation weight gain rate. However, Al doping induced the formation of a continuously dense alumina, which effectively suppressed the element inter-diffusion. Preferential oxidation of Al also suppressed rapid growth of brittle (Ni, Co)Cr2O4 spinel. NiCoCrAlY with Al addition exhibited excellent structural stability and a low oxidation weight gain rate.

引用

页数：5

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