碳钢在模拟海水中的腐蚀行为研究

采用静态挂片试验、动电位极化曲线试验研究了碳钢在模拟海水中的腐蚀行为。结果表明,Cl~-对腐蚀的影响最大,且腐蚀速度随着Cl~-浓度的增大先增大后减小,腐蚀形式主要为孔蚀;电极过程表现为阳极的极化率较小,阴极腐蚀过程的速度由氧的扩散过程所控制,腐蚀主要是氧的去极化所致。

Corrosion Behavior of Carbon Steel is Studied in Simulate Seawater

The corrosion behavior of carbon steel in simulate seawater was studied by static coupon weight loss and polarization curve methods. Results showed that the influence of Cl- on the corrosion is the greatest and the corrosion rate increased firstly then decreased with the increasing of C1- content, the pitting was the main forms of corrosion; the anodic polarization is weak and the rate of cathodic corrosion process was controlled by oxygen diffusion process, the corrosion is almost caused by the depolarization of dissolved oxygen.