Improved oxidation performance of TiAl alloy by a novel Al-Si composite coating

被引：17
|
作者：
Wang, Qi [1 ,3 ]
Wu, Wei-Yao [2 ]
Jiang, Mei-Yan [2 ]
Cao, Fa-He [1 ]
Wu, Hai-Xin [1 ,3 ]
Sun, Dong-Bai [1 ,3 ]
Yu, Hong-Ying [1 ]
Wu, Lian-Kui [1 ,2 ]
机构：
[1] Sun Yat Sen Univ, Sch Mat, Guangzhou 510275, Peoples R China
[2] Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Peoples R China
[3] Sun Yat Sen Univ, South China Sea Inst, Guangzhou 510275, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2020年 / 381卷 / 381期
基金：
中国国家自然科学基金;
关键词：
TiAl; Magnetron sputtering; Aluminizing coating; SiO2; coating; High temperature oxidation; HIGH-TEMPERATURE OXIDATION; THERMAL BARRIER COATINGS; TITANIUM-ALLOYS; ISOTHERMAL OXIDATION; BEHAVIOR; RESISTANCE; FILM; TI-50AL; PROTECTION; ELEMENTS;
D O I：
10.1016/j.surfcoat.2019.125126
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A novel Al-Si composite coating was fabricated on gamma-TiAl by the combination of magnetron sputtered Al coating and subsequently electrodeposited SiO2 coating. The oxidation performance of the specimens was evaluated in static air at 900 degrees C. Results shown that the Al Si composite coating can act as an efficient oxygen migration barrier and provide good oxidation resistance. During the oxidation process, an Al2O3 enriched layer formed beneath the composite coating. The interfacial reaction between the composite coating and alloy resulted in the generation of Al2O3 and Ti5Si3.
引用
收藏
页数：13
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