High temperature oxidation behavior of TiAl alloy with electrodeposited SiOC coating

被引：7
|
作者：
Yan, Hao-Jie [1 ]
Li, Yun-Yang [1 ]
Yin, Ruo-Zhan [1 ]
Sun, Qing-Qing [1 ]
Liu, Hui-Jun [2 ]
Zeng, Chao-Liu [2 ]
Wu, Lian-Kui [1 ]
Cao, Fa-He [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Mat, Shenzhen 518107, Peoples R China
[2] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 224卷
基金：
中国国家自然科学基金;
关键词：
TiAl; SiOC coating; High temperature oxidation; Free carbon; Selective oxidation; SILICON OXYCARBIDE GLASSES; CERAMIC COATINGS; SIALOC GLASSES; RESISTANCE; SILANE; IMPROVEMENT; PRECURSOR; MICROSTRUCTURE; BARRIER;
D O I：
10.1016/j.corsci.2023.111491
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
SiOC coating was electrodeposited on TiAl alloy to improve the high temperature oxidation resistance. The mass gain of the compact SiOC coating is 0.06 +/- 0.026 mg cm-2, which is one order of magnitude lower than that of TiAl alloy. The SiOC coating exhibits good thermal stability and partial amorphous SiOC transforms into crystal SiO2 or SiC. After oxidation, no obvious pore can be found in the coating. Moreover, an Al2O3 layer is generated due to the enrichment of Al and the low oxygen partial pressure at the coating/substrate interface, therefore improving the barrier property of the oxide scale.
引用
收藏
页数：12
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