Interfacial reaction between SiO2-Al2O3-ZnO-CaO based glass coatings and K38G superalloy substrates

被引：23

作者：

Chen, Minghui ^{[1
]}

Shen, Mingli ^{[1
]}

Wang, Xin ^{[1
]}

Zhu, Shenglong ^{[1
]}

Wang, Fuhui ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 216卷

基金：

中国国家自然科学基金;

关键词：

Glass coatings; Superalloys; Crystallization; Interfacial reaction; Element diffusion; TITANIUM-PORCELAIN SYSTEM; NITRIDED PURE TITANIUM; HOT CORROSION BEHAVIOR; OXIDATION; ALLOY; PROTECTION; COMPONENTS; STRENGTH;

D O I：

10.1016/j.surfcoat.2012.11.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In order to extend the use of a SiO2-Al2O3-ZnO-CaO based glass coating for higher temperature applications on Ni-base superalloy substrates, its interfacial reaction with the K38G superalloy substrates at 1000 degrees C was investigated. Results indicated that the interfacial reaction resulted in bubbling of the glass coatings due to Zn gas volatilization and formation of a loose TiO2 interlayer which finally accounted for the peeling of the coatings. With a pre-crystallization process of the glasses, its interfacial reaction was controlled and the bubbling of the coatings was avoided. After the heat-treatment at 1000 degrees C for 20 h, the glass coatings were still very dense and bonded well to the K38G superalloy substrates. Instead of a loose TiO2 interlayer, an Al-riched layer formed at the interfaces. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：145 / 151

页数：7

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