磁场作用下<strong>5083</strong>铝合金腐蚀行为研究

doi:10.11902/1005.4537.2023.003

中国腐蚀与防护学报

2024, Vol. 44

Issue (1): 229-236 CSTR: 32134.14.1005.4537.2023.003 DOI: 10.11902/1005.4537.2023.003

研究报告

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磁场作用下5083铝合金腐蚀行为研究

熊伊铭¹, 梅婉¹, 王泽华¹(

), 余瑞¹, 徐诗瑶¹, 吴磊², 张欣¹^,²(

)

^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

Corrosion Behavior of 5083 Al-alloy under Magnetic Field

XIONG Yiming¹, MEI Wan¹, WANG Zehua¹(

), YU Rui¹, XU Shiyao¹, WU Lei², ZHANG Xin¹^,²(

)

^1.College of Mechanics and Materials, Hohai University, Nanjing 211100, China
^2.Jiangsu Technical Center for Wind Energy Engineering, Nanjing 210008, China

引用本文:

熊伊铭, 梅婉, 王泽华, 余瑞, 徐诗瑶, 吴磊, 张欣. 磁场作用下5083铝合金腐蚀行为研究[J]. 中国腐蚀与防护学报, 2024, 44(1): 229-236.
Yiming XIONG, Wan MEI, Zehua WANG, Rui YU, Shiyao XU, Lei WU, Xin ZHANG. Corrosion Behavior of 5083 Al-alloy under Magnetic Field[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(1): 229-236.

全文: PDF(6162 KB) HTML

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。

关键词 ： 5083铝合金, 磁场, 腐蚀行为, 点蚀

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.

Key words： 5083 Al-alloy magnetic field corrosion behavior pitting corrosion

收稿日期: 2023-01-09 32134.14.1005.4537.2023.003

ZTFLH:

TG.174.442

基金资助:江苏风力发电工程技术中心开放基金(ZK22-03-08)

通讯作者: 王泽华，E-mail: zhwang@hhu.edu.cn，研究方向为金属成型技术，热喷涂技术
张欣，E-mail: zhangxin.007@163.com，研究方向为先进铝合金制备与加工，热喷涂技术

Corresponding author: WANG Zehua, E-mail: zhwang@hhu.edu.cn
ZHANG Xin, E-mail: zhangxin.007@163.com

作者简介: 熊伊铭，男，2000年生，硕士生

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https://www.jcscp.org/CN/10.11902/1005.4537.2023.003 或 https://www.jcscp.org/CN/Y2024/V44/I1/229

图1 磁场对5083铝合金浸泡腐蚀失重的影响

图2 不同磁场强度下5083铝合金腐蚀30 d后的形貌

图3 不同磁场强度下5083铝合金浸泡30 d后微观腐蚀SEM形貌

表1 不同磁场强度下5083铝合金浸泡30 d试样表面元素分析

图4 5083铝合金在不同磁场强度下开路电位随时间变化曲线

图5 不同磁场强度下5083铝合金的Nyquist和Bode图及等效电路图

表2 不同磁场强度下5083铝合金阻抗谱等效电路的电化学参数

图6 不同磁场强度下5083铝合金浸泡不同时间的动电位极化曲线

表3 不同磁场强度下5083铝合金浸泡0和24 h的极化曲线拟合参数

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