Effect of Lu2O3 addition on the oxidation behavior of SiC-ZrB2 composite coating at 1500 °C: Experimental and theoretical study

被引：11

作者：

Xie, Wei ^{[1
]}

Fu, Qiangang ^{[1
]}

Cheng, Chunyu ^{[1
]}

Wang, Peipei ^{[2
]}

Li, Jie ^{[1
]}

Yan, Ningning ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Prov Key Lab Fiber Reinforced Light Compo, Xian 710072, Peoples R China

[2] Xian Univ Sci & Technol, Coll Mat Sci & Engn, Xian 710054, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 192卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Lu2O3; Oxidation resistance; First-principles simulations; Carbon/carbon composites; HIGH-TEMPERATURE; C/C COMPOSITES; MICROSTRUCTURE; PROTECTION; CHEMISTRY;

D O I：

10.1016/j.corsci.2021.109803

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Lu2O3 on the oxidation behavior of SiC-ZrB2 composite coating at 1500 degrees C in static air was investigated by oxidation test and first-principles simulations. The Lu2O3-SiC-ZrB2 composite coating protected C/C composites from oxidation at 1500 degrees C for 836 h with a mass gain of only 0.62 mg/cm(2). The introduction of Lu2O3 was beneficial for improving the densification of Lu2O3-SiC-ZrB2 composite coating. The experimental and first-principles simulations results suggest that Zr and Lu atoms tended to diffuse into the SiO2 network, which further developed the stability of SiO2 structure, thus leading to a good oxidation resistance of the Lu2O3-SiC-ZrB2 composite coating.

引用

页数：10

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