A3钢在海泥中的腐蚀行为
Corrosion Behavior of A3 Steel in Sea Mud
摘 要
对A3钢在模拟海泥环境中进行了埋片试验和电化学试验,以研究海底管道在含硫酸盐还原菌(SRB)海泥中的腐蚀行为.结果表明,A3钢在砂泥中的腐蚀速率明显高于在海砂中的腐蚀速率,随温度的升高,A3钢在海砂中的腐蚀速率升高；且随温度的升高、SRB和SO2-4含量的增加,A3钢在砂泥中的腐蚀速率随之升高；在无菌海泥中A3钢的腐蚀速率随温度升高而增大,主要是由于作为阴极去极化剂的氧的扩散速度随温度升高而增大；在有菌海泥中SO2-4能参与阴极去极化而加速A3钢的腐蚀.
海泥
SRB
腐蚀
A3 steel
sea mud
SRB
corrosion
Abstract
The corrosion rate of seabed pipeline in sea mud was studied by weight-loss experiments and electrochemical measurements with A3 steel in simulated sea mud.The results showed that the corrosion rate of A3 steel in sandy soil was significantly higher than that in sea sand.The corrosion rate of A3 steel in sea sand increased with the increase of temperature.With the increase of SRB and SO2-4,the corrosion rate of A3 steel increased in sandy soil.The increase of corrosion rate of A3 steel in marine mud without SRB with the increase of temperature was mainly due to the increase of diffusion rate of oxygen as a depolarizing agent of cathode.SO2-4 could participate in the cathodic depolarization and accelerate the corrosion rate of A3 steel in sea mud with SRB.
中图分类号 TG172
所属栏目 试验研究
基金项目
收稿日期 2008/1/6
修改稿日期 2008/4/22
网络出版日期
作者单位点击查看
引用该论文: WEI Ai-jun,HUO Fu-yong,XIONG Xiang-jun,JIANG Hua-yi,YANG Hai-long. Corrosion Behavior of A3 Steel in Sea Mud[J]. Corrosion & Protection, 2009, 30(2): 99～101
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参考文献
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