Oxidation performance and interfacial reaction behavior of glass-ceramic coating on TiAl alloy with electrodeposited SiO2 interlayer

被引：17

作者：

Wu, Jing-Jia ^{[1
,2
]}

Yan, Hao-Jie ^{[1
]}

Cao, Fa-He ^{[1
]}

Wu, Lian-Kui ^{[1
,2
]}

机构：

[1] Sun Yat Sen Univ, Sch Mat, Shenzhen 518107, Peoples R China

[2] Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2021年 / 422卷

基金：

中国国家自然科学基金;

关键词：

TiAl alloy; Glass-ceramic coating; SiO2; High temperature oxidation; COMPOSITE COATINGS; TITANIUM-ALLOY; TI6AL4V ALLOY; MICROSTRUCTURE; RESISTANCE; PROTECTION; FILM; SYSTEM; PHASE;

D O I：

10.1016/j.surfcoat.2021.127495

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A duplex composite coating consisting of electrodeposited SiO2 interlayer and glass-ceramic coating was fabricated on TiAl alloy. The oxidation behavior of the composite coating was studied in air at 1000 degrees C. The composition, morphology, and microstructure of the oxide scale were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS). Results showed that the composite coating exhibited outstanding resistance against high temperature oxidation. After 100 h oxidation, no scale spallation was observed and the weight gain was only 1.16 mg cm(-2). The inward diffusion of oxygen and outward diffusion of Ti were efficiently prevented. A continuous and adherent Al2O3 layer was formed at the coating/substrate interface. The electrodeposited SiO2 interlayer could improve the adhesion between the substrate and glass-ceramic coating.

引用

页数：13

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