磁场作用下5083铝合金腐蚀行为研究  

Corrosion Behavior of 5083 Al-alloy under Magnetic Field

作　　者：熊伊铭 梅婉 王泽华[1] 余瑞 徐诗瑶 吴磊 张欣[1,2] XIONG Yiming;MEI Wan;WANG Zehua;YU Rui;XU Shiyao;WU Lei;ZHANG Xin(College of Mechanics and Materials,Hohai University,Nanjing 211100,China;Jiangsu Technical Center for Wind Energy Engineering,Nanjing 210008,China)

机构地区：[1]河海大学力学与材料学院,南京211100 [2]江苏风力发电工程技术中心,南京210008

出　　处：《中国腐蚀与防护学报》2024年第1期229-236,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：江苏风力发电工程技术中心开放基金(ZK22-03-08)。

摘　　要：采用浸泡实验、电化学实验,通过扫描电子显微镜(SEM)、能谱分析仪(EDS)和电化学工作站等设备研究了磁场作用下5083铝合金腐蚀行为,探索了磁场对铝合金腐蚀的作用规律。研究结果表明:与普通环境相比,磁场影响了铝合金腐蚀过程中带电粒子运动,抑制Cl^(-)对钝化膜的破坏作用,导致5083铝合金开路电位和点蚀电位的升高,腐蚀电流密度的降低,合金浸泡后表面的点蚀坑数量和尺寸降低。磁场能够降低5083铝合金的点蚀倾向和腐蚀速率,随着磁场强度的增加,抑制腐蚀的作用越明显。The corrosion behavior of 5083 Al-alloy under magnetic field was studied by immersion test,electrochemical measurement,scanning electron microscope(SEM),energy spectrum analyzer(EDS)and electrochemical workstation,et al.The results indicated that the magnetic field could affect the motion of charged particles in the corrosive medium and inhibited the effect of destroying effect of Cl-on passivation film.The applied magnetic field could rise the free corrosion-and pitting corrosion-potentials,and reduce the corrosion current density of 5083 Al-alloy.At the same time,the number and size of pits under magnetic field were lower than those without applied magnetic field.Magnetic field can reduce the pitting sensitivity and corrosion rate of 5083 Al-alloy.The inhibition effect is enhanced with the increase of magnetic field intensity.

关 键 词：5083铝合金 磁场 腐蚀行为 点蚀 

分 类 号：TG.174.442[金属学及工艺]