摘要
采用电沉积方法在20钢表面制备了Zn-Ni-Ag复合镀层,并通过静态挂片试验及电化学测试研究了Zn-Ni-Ag镀层以及20钢在硫酸盐还原菌(SRB)条件下的腐蚀行为。结果表明:Zn-Ni-Ag镀层对SRB的生长有一定的抑制效果,挂片试验10 d后,20钢体系中SRB数量为13×10^(7)个/mL,而Zn-Ni-Ag镀层体系中的SRB数量为5.0×10^(7)个/mL;在SRB环境中,Zn-Ni-Ag镀层具有良好的耐蚀性,腐蚀速率始终保持在较低水平,且一直低于20钢的腐蚀速率。在SRB环境中,Zn-Ni-Ag镀层的耐腐蚀性能稳定,可以对碳钢提供保护作用。
A Zn-Ni-Ag composite coating was prepared on the surface of 20 steel by electrodeposition method,and the corrosion behavior of the Zn-Ni-Ag coating and 20 steel under sulfate reducing bacteria(SRB)conditions was studied through static coupon test and electrochemical test.Results showed that the Zn-Ni-Ag coating had a certain inhibitory effect on the growth of SRB.After 10 days of coupon test,the number of SRB in 20 steel system was stable at 13×10^(7)/mL,while the number of SRB in Zn-Ni-Ag coating system was stable at 5.0×10^(7)/mL.In the SRB environment,the Zn-Ni-Ag coating had good corrosion resistance,and the corrosion rate was always kept at a low level,and was always lower than that of 20 steel.The corrosion resistance of the Zn-Ni-Ag coating was stable in the SRB environment.Therefore,the Zn-Ni-Ag coating could provide protection for carbon steel in the presence of SRB.
作者
谭鹏
曾余祥
邱海燕
岳明
兰贵红
徐波
TAN Peng;ZENG Yuxiang;QIU Haiyan;YUE Ming;LAN Guihong;XU Bo(Southwest Petroleum University,Chengdu 610500,China;PetroChina Tarim Oilfield Company,Korla 841000,China;Department of Shale Gas Exploration and Development Project Management,Chuanqing Drilling Engineering Co.,Ltd.,Chengdu 610051,China)
出处
《腐蚀与防护》
CAS
北大核心
2022年第11期17-23,共7页
Corrosion & Protection
基金
四川省油气应用化学重点实验室开放项目(YQKF201406)。
