Microstructure and Properties of Composite Modified Layer of Austenitic Stainless Steel Obtained by Nitriding & Physical Vapor Deposition

被引：0

作者：

Chen Z. ^{[1
]}

Cao C. ^{[1
,2
]}

Yang R. ^{[1
,2
]}

Mu X. ^{[1
]}

Chen B. ^{[1
]}

Hu Q. ^{[2
]}

机构：

[1] Wenzhou Pump and Valve Engineering Research Institute of Lanzhou University of Technology, Wenzhou

[2] Institute of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou

来源：

Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 06期

关键词：

Austenitic stainless steel; Composite modification; CrN coating; S-phase;

D O I：

10.11896/cldb.19120214

中图分类号：

学科分类号：

摘要：

Austenitic stainless steel 316L was ion nitrided by glow plasma penetration and diffusion technique at different temperatures, subsequently, CrN coating was deposited on top of the nitrided layer by physical vapor deposition technology. The adhesion strength, hardness, tribological property and corrosion resistance of the duplex coating were tested. The microstructure and phase constituents were also examined. It has been found that, with the increase of temperature, the microconstituent of the duplex coating gained by plasma nitriding at different temperatures and PVD transfers from S-phase (inner layer)+CrN coating (outer layer) to hard phase precipitated layer of different degree (inner layer)+CrN coa-ting (outer layer). The adhesion strength of different kinds of nitrided layer with CrN coating was good. After PVD treatment, the surface hardness, abrasion resistance and corrosion resistance of nitrided layer was improved to some extent whether it was S-phase or hard phase precipitated layer. With the increase of nitriding temperature, the corrosion resistance deteriorated, the hardness and abrasion resistance were elevated. © 2021, Materials Review Magazine. All right reserved.

引用

页码：6161 / 6166

页数：5

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