Erosion-enhanced corrosion of carbon steel at passive state

被引：33
|
作者：
Lu, B. T. [1 ]
Luo, J. L. [1 ]
Guo, H. X. [1 ]
Mao, L. C. [1 ]
机构：
[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Mild steel; Erosion; Pitting corrosion; Anodic dissolution; Passive film; STAINLESS-STEEL; SLURRY EROSION; MODEL; FILM; ELECTRODE; VELOCITY; SYSTEM; IRON;
D O I：
10.1016/j.corsci.2010.09.054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Erosion-enhanced corrosion of carbon steel in passive state during slurry impingement is dominated by the competition between fresh surface generation and repassivation The presence of chloride retards repassivation The average corrosion rate is quantitatively predictable when the hydrodynamics of slurry and repassivation kinetics of target material are known The electrochemical impedance spectroscopy suggests that the corrosion in flowing slurry is under mixed control of interface charge transfer and mass transport The later becomes the dominative role gradually with increasing generation rate of fresh surface Slurry impingement may facilitate pit formation and promote repassivation of existing pits simultaneously Crown Copyright (C) 2010 Published by Elsevier Ltd All rights reserved
引用
收藏
页码：432 / 440
页数：9
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