摘要
采用室内静态挂片失重实验方法、动电位极化法、FE-SEM表面微观观察和XRD物相分析等技术,研究了A710钢在高S^(2-)含量的3.5%NaCl溶液中的腐蚀行为。结果表明:S^(2-)的加入能够增强钢基体表面的活性,导致维钝电流密度增大,钝化区间变窄,均匀腐蚀速率增加;在含有S^(2-)的NaCl溶液中形成的腐蚀产物膜结构疏松,存在孔隙和裂纹,促进了膜下点蚀的发生。
The corrosion behavior of A710 steel in high S^2-containing 3.5%（mass fraction） Na Cl solutions was investigated by means of weight loss measurement, electrochemical measurement, FE-SEM and XRD. Results showed that the addition of S^2-could promote the activation of the steel surface, which in turn leads to the increase of passivation current density. The corrosion product scale formed in the S^2-containing Na Cl solutions was loose with pores and cracks, while pitting corrosion occurred beneath the corrosion product scale.
作者
王玉昆
刘静
胡骞
黄峰
WANG Yukun;LIU Jing;HU Qian;HUANG Feng(State Key Laboratory of Refractories andMetallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Steel Common Synergy Innovation Center,University of Science and Technology Beijing,Beijing 100083,China)
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2018年第3期233-240,共8页
Journal of Chinese Society For Corrosion and Protection
基金
湖北省科技支撑计划(2015BAA083)~~
关键词
高强钢
S^2-
海洋环境
点蚀
high-strength steel
S^2-
marine environment
pitting
