摘要
为了明确铝阳极与锌阳极在工艺水舱等特殊环境下谁更适合使用。依照NACE TM 0190中牺牲阳极的电化学测试方法,对比研究了Al-Zn-In-Si阳极与Zn-Al-Cd阳极在高温低氧的高盐度海水中的电化学性能。在55℃低氧海水中,随着溶液盐度升高,铝阳极的电位有所负移,电化学效率急剧下降,腐蚀形貌越发不均匀;锌阳极的电位变化情况近似铝阳极,但电化学效率变化不大,且腐蚀形貌比较均匀。在特殊环境下,从电化学性能来看,锌阳极更适用。并且,不同盐度的溶液中,锌阳极与铝阳极的电位接近,不存在电位极性反转的情况。
In order to make it clear that if aluminum anode or zinc anode is more suitable for use in special environments such as process water tanks.According to NAcE TM 0190,the impressed current laboratory testing of aluminum and zinc alloy anodes,the electrochemical properties of Al-Zn-In-Si anode and Zn-Al-Cd anode in high salinity seawater with high temperature and low oxygen were studied.In low-oxygen seawater at 55,with the increase of solution salinity,the potential of aluminum anode shift negatively,the electrochemical efficiency decreases sharply,and the corrosion morphology becomes more and more uneven.The potential change of zinc anode is similar to that of aluminum anode,but the electrochemical efficiency changes little and the corrosion morphology is more uniform.In special environment,zinc anode is more suitable from the perspective of electrochemical performance.In addition,the potential of zinc anode is close to that of aluminum anode in different salinities,and there is no potential polarity reversal.
作者
陈亚林
黄卫国
盛家程
隋普升
CHEN Ya-lin;HUANG Wei-guo;SHWNG Jia-cheng;SUI Pu-sheng(Qingdao NCS Testing and Protection Technology Co.,Ltd.,Qingdao 266071;Tianjin Branch of CN00C(China)Co.,Ltd.,Tianjin 300450)
出处
《环境技术》
2023年第10期76-81,89,共7页
Environmental Technology
基金
青岛市关键技术攻关及产业化示范类项目,项目编号:23-1-3-hygg-9-hy。
关键词
牺牲阳极
高温
铝合金
锌合金
电化学性能
sacrificial anode
high temperature
aluminum alloy
zinc alloy
electrochemical performance
