磁场作用下5083铝合金腐蚀行为研究
Corrosion Behavior of 5083 Al-alloy under Magnetic Field
熊伊铭 1梅婉 1王泽华 1余瑞 1徐诗瑶 1吴磊 2张欣3
作者信息
- 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
- 3. 河海大学力学与材料学院 南京 211100;江苏风力发电工程技术中心 南京 210008
- 折叠
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.
Abstract
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Key words
5083 Al-alloy/magnetic field/corrosion behavior/pitting corrosion引用本文复制引用
基金项目
江苏风力发电工程技术中心开放基金(ZK22-03-08)
出版年
2024
NETL
NSTL
维普
万方数据