Phase composition evolution and oxidation behavior of atmospheric plasma spraying Si and Si-HfO2 bond coats at 1300 °C

被引：4

作者：

Yu, Shuang ^{[1
,2
]}

Wang, Yaming ^{[1
,2
]}

Wang, Shuqi ^{[1
,2
]}

Zhao, Qiang ^{[3
]}

Li, Yang ^{[3
]}

Ren, Dawei ^{[3
]}

Chen, Guoliang ^{[1
,2
]}

Zou, Yongchun ^{[1
,2
]}

Ouyang, Jiahu ^{[1
,2
]}

Jia, Dechang ^{[1
,2
]}

Zhou, Yu ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Inst Adv Ceram, Harbin 150080, Peoples R China

[2] Harbin Inst Technol, Key Lab Adv Struct Funct Integrated Mat & Green Mf, Harbin 150001, Peoples R China

[3] Harbin Guanghan Gas Turbine Co Ltd, Harbin 150046, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 222卷

关键词：

Si-HfO 2 bond coat; Oxidation resistance; Thermally grown oxide; Coefficient of thermal expansion; TRANSITION; HAFNIA; CRISTOBALITE;

D O I：

10.1016/j.corsci.2023.111439

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation resistance of pure Si and Si-HfO2 bond coats with three different compositions were investigated at 1300 & DEG;C. The pure Si bond coat is easy to crack and exfoliate due to the volume expansion of SiO2 produced by the oxidation of Si and the transformation of & beta;& RARR;& alpha;-cristobalite during cooling. While the 60Si-40HfO2 bond coat has excellent oxidation resistance at 1300 & DEG;C for 100 h, attributed to the oxidation product HfSiO4 consuming more SiO2 (the thickness of thermally grown oxide is 3.08 & PLUSMN; 0.36 & mu;m), which inhibits the sharp increase of thermal stress of the bond coat.

引用

页数：15

共 19 条

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