Effect of Sputtered AlY Coating on High-Temperature Oxidation Behavior of Stainless Steel

被引：1

作者：

Fu, Guangyan ^{[2
]}

Xie, Huanzhang ^{[3
]}

Su, Yong ^{[1
]}

Qi, Zeyan ^{[2
]}

Hou, Qiang ^{[2
]}

机构：

[1] Shenyang Univ Chem Technol, Sch Energy & Power Engn, Shenyang 110142, Peoples R China

[2] Shenyang Univ Chem Technol, Coll Mech Engn, Shenyang 110142, Peoples R China

[3] Shenyang Univ Chem Technol, Coll Mat Sci & Engn, Shenyang 110142, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2016年 / 35卷 / 07期

关键词：

magnetron sputtering; AlY coating; oxidation; pre-oxidation; vacuum annealing;

D O I：

10.1515/htmp-2015-0035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlY coating on 1Cr18Ni9Ti stainless steel was prepared by magnetron sputtering method and some of them were pre-oxidized or vacuum diffusion annealed at 600 degrees C, and the effect of the coating with different treatments on the oxidation behavior of the stainless steel was studied at 1,100 degrees C in air. Results show that the order of the 24-h oxidation mass gain for the specimens is the stainless steel without coating > the stainless steel with coating but without any pre-treatment > the stainless steel with AlY coating after pre-oxidation treatment > the stainless steel with AlY coating after vacuum diffusion annealing. After oxidation, a thick and loose Fe2O3/Cr2O3 film is formed on the stainless steel without coating, while thinner Fe2O3/Cr2O3 film is formed on the stainless steel with AlY coating. Compared to the oxidation film formed on the steel with pre-oxidized coating, the one formed on the steel with vacuum diffusion annealed coating is thinner and denser. The rare earth Y and its oxides Y2O3 in the coating produce reactive element effect and improve the ductility/adhesion of the oxide film, which enhances the oxidation resistance of the stainless steel, especially in the vacuum diffusion annealed AlY coating.

引用

页码：677 / 683

页数：7

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