摘要
以船舶用低合金为研究对象,采用电化学交流阻抗谱和极化曲线研究浸泡时间和氯离子浓度对低合金钢腐蚀的影响。实验结果表明,随着氯离子浓度从10-5 mol/L增加到10-1 mol/L,低合金钢的腐蚀速率从3.2×10-6 mA/cm2增加到1.1×10-5 mA/cm2,显著增加了低合金钢的腐蚀速率;此外随着浸泡时间从1d增加到30d,低合金钢在模拟海水中的电荷转移电阻有先增大后减小,最后渐渐稳定的趋势,第三天时电荷转移电阻达到最大的800Ω。
This paper takes low-alloy for shops as the object of study and adopts electrochemistry alternating-current impedance spectrum and polarization curve to study the effects of soaking time and chloride ion concentration on corrosion of low-alloy steel.The results show that the corrosion rate of low-alloy steel rises to 1.1×10^-5 mA/cm^2 from 3.2×10^-6 mA/cm^2 as chloride ion concentration increases to 10^-1 mol/L from 10^-5 mol/L.The corrosion rate of low-alloy steel boosts significantly.In addition,as the soaking time increases to 30 days from 1day,the charge transfer resistance of low-alloy steel in simulated water increases first,then decreases,and finally keeps constant.On the third day,the charge transfer resistance reaches the largest value（800Ω）.
出处
《浙江理工大学学报（自然科学版）》
2014年第4期487-490,共4页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省自然科学基金(Y4100191)
关键词
低合金钢
腐蚀
模拟海水
极化曲线
交流阻抗
low-alloy steel
corrosion
simulated seawater
polarization curve
alternating-current impedance
