Y-doped AlCoCrFeNi2.1 eutectic high-entropy alloy with excellent oxidation resistance and structure stability at 1000°C and 1100°C

被引：57

作者：

Lu, Jie ^{[1
]}

Zhang, Han ^{[1
]}

Chen, Ying ^{[2
]}

Ling, Li ^{[1
]}

Liu, Xuanzhen ^{[1
]}

Xiao, Weiwei ^{[3
]}

Ni, Na ^{[3
]}

Zhao, Xiaofeng ^{[1
]}

Guo, Fangwei ^{[1
]}

Xiao, Ping ^{[1
]}

机构：

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

[2] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[3] Shanghai Jiao Tong Univ, Sch Mech Engn, Key Lab Educ Minist Power Machinery & Engn, Shanghai 200240, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 180卷

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

High-entropy alloy; Oxidation; Al(2)O(3)scale; High-temperature; COATINGS; BEHAVIOR; MECHANISMS; DIFFUSION; SIZE;

D O I：

10.1016/j.corsci.2020.109191

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the oxidation behavior of AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) with/without Y doping at 1000 degrees C and 1100 degrees C was reported. The doping of minor Y is crucial to improving the Al2O3 scale adhesion and achieving its durability at high temperatures. The oxidation rates of Y-doped AlCoCrFeNi2.1 EHEA at 1000 degrees C and 1100 degrees C are comparable and even lower compared with conventional Al2O3-forming NiCoCrAlY/CoNiCrAlY alloys. The superior oxidation resistance and highly stable eutectic lamellar structure after high-temperature oxidation make Y-doped AlCoCrFeNi2.1 EHEA show a tremendous potential in high-temperature application.

引用

页数：10

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