A novel Zr-Y modified silicide coating on Nb-Si based alloys as protection against oxidation and hot corrosion

被引：35

作者：

He, Jiahua ^{[1
]}

Guo, Xiping ^{[1
]}

Qiao, Yanqiang ^{[1
]}

Luo, Fa ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

CORROSION SCIENCE | 2020年 / 177卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Metal coatings; Zirconium; EPMA; Oxidation; Hot corrosion;

D O I：

10.1016/j.corsci.2020.108948

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

y To protect Nb-Si based alloys from oxidation and hot corrosion attacks at high temperatures, a novel Zr-Y modified silicide coating is fabricated by combining magnetron sputtering and pack cementation. It has been shown that the coating exerts a superior oxidation resistance (mass gain of 1.6 mg/cm(2)) than Si-Y coating (mass gain of 4.2 mg/cm(2)), which is attributed to forming a thin, compact and continuous SiO2 scale and favorable scale/coating interface. Due to possessing much better scale adherence and reduced formation rate of scale, the coating possesses a better hot corrosion resistance than substrate alloy and Si-Y coating.

引用

页数：17

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