Pitting corrosion of 304ss nanocrystalline thin film

被引：77
|
作者：
Pan, Chen [1 ]
Liu, Li [1 ]
Li, Ying [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：
CORROSION SCIENCE | 2013年 / 73卷
关键词：
Sputtered film; AFM; Pitting corrosion; STAINLESS-STEEL; PIT GENERATION; STOCHASTIC-PROCESSES; ANODIZED TITANIUM; BEHAVIOR; 304-STAINLESS-STEEL; GROWTH; RESISTANCE; INITIATION; MECHANISM;
D O I：
10.1016/j.corsci.2013.03.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pitting corrosion behavior of coarse crystalline (CC) 304ss and its nanocrystalline (NC) thin film have been investigated by electrochemical measurement and in situ AFM observation in 3.5% NaCl solution. Results show two effects of nanocrystallization on pitting corrosion behavior: (I) more frequent occurrence of metastable pits, but with lower probability of transition to stable pits, which is attributable to differences in morphologies of sulfur and manganese as well as outstanding repassivation ability of NC thin film; (2) nanocrystallization decreases stable pit generation rate and its propensity to form larger pit cavities, and modifies the morphology of stable pit cavity. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：32 / 43
页数：12
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