金属材料在模拟深海中的腐蚀电位  

Corrosion Potential of Metal Materials in Simulated Deep Sea

作　　者：丁国清 刘凯吉[1,2] 杨海洋 杨朝晖 张波[1,2] DING Guoqing;LIU Kaiji;YANG Haiyang;YANG Zhaohui;ZHANG Bo(Qingdao NCS Testing&Protection Technology Co.,Ltd.,Qingdao 266071,China;Qingdao Marine Corrosion Research InstituteCo.,Ltd.,Cenrtal Research of Iron and Steel,Qingdao 266071,China)

机构地区：[1]青岛钢研纳克检测防护技术有限公司,青岛266071 [2]钢铁研究总院青岛海洋腐蚀研究所有限公司,青岛266071

出　　处：《腐蚀与防护》2022年第7期63-66,共4页Corrosion & Protection

基　　金：国家科技基础条件平台专题项目(2005DKA10400-14Z1)。

摘　　要：利用自行研制的多通道电位自动采集装置,测试了19种金属材料在8 MPa模拟深海环境中的腐蚀电位,分析了腐蚀电位变化规律,得出了试验用金属材料在模拟深海中的腐蚀电位序。结果表明:碳钢、低合金钢、铝合金、铜合金及铝阳极均迅速达到稳定电位,电位波动较小;不锈钢和镍基合金在试验初期的腐蚀电位较正,随着浸泡时间的延长,腐蚀电位明显减小,电位变化幅度较大;金属材料在模拟深海环境中仅存在一个状态稳定电位,稳定腐蚀电位从低到高顺序大致为:铝阳极、铝合金、碳钢、低合金钢、高强不锈钢、铜合金、不锈钢、镍基合金。A self-developed multi-channel automatic potential acquisition device was used to monitor the corrosion potential of 19 kinds of metal materials in the simulated deep sea at a pressure of 8 MPa.The change rule of corrosion potential was analyzed,and the corrosion potential series of metal materials in simulated deep sea was given.The results showed that the potential of carbon steels,low alloy steels,aluminum alloys,copper alloys and aluminum anodewas stable rapidly and the potential fluctuation was small.The corrosion potential of stainless steels and nickel base alloys was positive at the beginning of the test.The corrosion potential versus immersion time decreased obviously and the potential change range was larger.In the simulated deep-sea environment,only activated stable potentials existed in the metal materials.The steady corrosion potentials of tested metallic materials can be ranked as a series from low to high as:aluminum anode,aluminum alloys,iron castings,carbon and low alloy steels,copper alloys,stainless steels and nickel base alloys.

关 键 词：金属材料 模拟深海 腐蚀电位 

分 类 号：TG174[金属学及工艺—金属表面处理]