不同磁场强度下铝镁合金腐蚀行为研究  

Corrosion Behavior of Al-3.0Mg-xRE/Fe Alloys Under Magnetic Field of Different Intensities

作　　者：黄连鹏 张欣[1] 熊伊铭 陶嘉豪 王泽华[1] 周泽华[1] HUANG Lianpeng;ZHANG Xin;XIONG Yiming;TAO Jiahao;WANG Zehua;ZHOU Zehua(College of Mechanics and Materials,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学力学与材料学院,南京211100

出　　处：《中国腐蚀与防护学报》2022年第5期833-838,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51909071);江苏省自然科学基金(BK20190493);中央高校基本科研业务费专项(B220202040)。

摘　　要：通过扫描电子显微镜(SEM)、能谱分析仪(EDS)和电化学工作站研究了不同磁场强度下铝镁合金的腐蚀行为,探索了磁场强度对不同物相特性铝镁合金腐蚀行为的作用规律。研究结果表明:与普通环境相比,磁场中Al-3.0Mg-xRE/Fe合金的腐蚀电位、点蚀电位均升高,腐蚀电流密度降低,浸泡后点蚀坑数量和尺寸均减少,磁场能够一定程度地降低Al-3.0Mg-xRE/Fe合金的腐蚀和点蚀敏感性及腐蚀速率。随着磁场强度的增高,磁场抑制合金腐蚀的作用增强。The corrosion behavior of Al-3.0Mg-xRE/Fe alloys in 3.5%NaCl solution in the presence of magnetic field of different intensities was studied by means of electrochemical workstation,and scanning electron microscope(SEM)with energy disperse spectroscopy(EDS).The results indicated that the applied magnetic field could enhance the corrosion potential and pitting corrosion potential,and reduce the corrosion current density of Al-3.0Mg-xRE/Fe alloys.At the same time,the amount and size of the formed pits in the presence of magnetic field were lower than those in the absence of magnetic field.Magnetic field can reduce the corrosion-and pitting-sensitivity,and the corrosion rate of Al-3.0Mg-xRE/Fe alloys.With the increase of magnetic field intensity,the inhibition effect of magnetic field is enhanced.

关 键 词：不同物相特性铝镁合金 稀土元素 磁场 腐蚀行为 点蚀 

分 类 号：TG174.442[金属学及工艺—金属表面处理]