Effect of Al content on the oxidation behavior of NiCoCrAlYHf alloys at 1100 °C

被引：14

作者：

Huang, Aihui ^{[1
]}

Chen, Ying ^{[2
,3
]}

Zhang, Zhao ^{[4
]}

Shen, Jianyu ^{[5
]}

Li, Ling ^{[1
]}

Liu, Xuanzhen ^{[1
]}

Zhang, Han ^{[1
]}

Lu, Jie ^{[1
]}

Zhao, Xiaofeng ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formin, Shanghai 200240, Peoples R China

[2] Univ Manchester, Dept Mat, Manchester M13 9PL, England

[3] Univ Manchester, Henry Royce Inst, Manchester M13 9PL, England

[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[5] GRINM Resources & Environm Tech Co Ltd, Beijing 100088, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 222卷

基金：

中国国家自然科学基金;

关键词：

Al content; Oxidation behavior; NiCoCrAlYHf alloy; THERMAL BARRIER COATINGS; BOND COAT; CYCLIC OXIDATION; GROWTH-MECHANISM; SCALE FORMATION; ALUMINA SCALE; KINETICS; NI; MICROSTRUCTURE; ADDITIONS;

D O I：

10.1016/j.corsci.2023.111417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Al content on the oxidation behavior of NiCoCrAlYHf alloys (Ni44Al16, Ni42Al18 and Ni40Al20) at 1100 & DEG;C is investigated in this study. It is demonstrated that the oxidation rate of NiCoCrAlYHf alloy decreases with the increase of Al content. The Al content play the important role on the oxidation rate by determining the columnar grain size of & alpha;-Al2O3 scale and the distribution of Y/Hf-rich oxides within the & alpha;-Al2O3 scale, which shows large influence on O diffusion rate. Those findings can provide guidance for the high-performance NiCoCrAlYHf coatings design.

引用

页数：11

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