Passive behavior of a bulk nanostructured 316L austenitic stainless steel consisting of nanometer-sized grains with embedded nano-twin bundles

被引：73
作者：
Li, Tianshu [1 ]
Liu, Li [1 ]
Zhang, Bin [1 ]
Li, Ying [1 ]
Yan, Fengkai [2 ]
Tao, Nairong [2 ]
Wang, Fuhui [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2014年 / 85卷
关键词：
Passive films; Passivity; Stainless steel; XPS; AFM; ELECTROCHEMICAL CORROSION BEHAVIOR; IRON-CHROMIUM-ALLOYS; MIXED-CONDUCTION MODEL; NI-BASED SUPERALLOY; POINT-DEFECT MODEL; ANODIC OXIDE-FILM; HIGH-TEMPERATURE ELECTROLYTE; DYNAMIC PLASTIC-DEFORMATION; SULFURIC-ACID-SOLUTION; FE-CR ALLOYS;
D O I：
10.1016/j.corsci.2014.04.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The passive behavior of a bulk nanostructured 316L austenitic stainless steel consisting of nanometer-sized grains (NG) and nano-twin bundles (NT) are investigated. The electrochemical results indicate that the spontaneous passivation ability and growth rate of passive film are improved. The X-ray photoelectron spectroscopy (XPS) shows that a Cr-0-enriched layer forms at the passive film/metal interface. More nucleation sites afforded by the nanostructures and the enhanced diffusion rate of charged species across the passive film are believed to be responsible for the improved passive ability. The PDM model is introduced to elaborate the microscopic process of passivation. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：331 / 342
页数：12
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