电磁场对2507 超级双相不锈钢腐蚀行为的影响

黄泽政, 唐楚天, 黄仲佳, 毛飞雄, 高慧杰, 陈 凯, 俞国军

doi:10.16577/j.issn.1001-1560.2023.0162

材料保护 >

2023 , Vol. 56 >Issue 7: 64 - 69

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0162

试验研究

电磁场对2507 超级双相不锈钢腐蚀行为的影响

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1.安徽工程大学高性能有色金属材料安徽省重点实验室，安徽芜湖 241000；2.中科院宁波材料技术与工程研究所，中国科学院海洋新材料与应用技术重点实验室，浙江省海洋材料与防护技术重点实验室，浙江宁波 315201；3.昆明理工大学材料科学与工程学院，云南昆明 650093；4.长春理工大学光电工程学院，吉林长春 130022；5.宁波东方电缆股份有限公司，浙江宁波 315801

唐楚天(1986-) ，硕士，工程师，主要从事金属腐蚀与防护方面，E-mail: 1018356909＠qq.com

收稿日期: 2023-02-15

修回日期: 2023-03-12

录用日期: 2023-04-16

网络出版日期: 2023-08-23

基金资助

国家自然科学基金(51601035)项目；安徽省自然科学基金(2008085ME141)资助

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Effect of Electromagnetic Field on the Corrosion Behavior of 2507 Super Duplex Stainless Steel

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1.Anhui Key Laboratory of High Performance Nonferrous Metal Materials，Anhui Polytechnic University，Wuhu 241000，China；2.Key Laboratory of Marine Materials and Related Technologies，Zhejiang Key Laboratory of Marine Materials and Protective Technologies，Ningbo Institute of Materials Technology and Engineering，Chinese Academy of Sciences，Ningbo 315201，China；3.School of Materials Science and Engineering，Kunming University of Science and Technology，Kunming 650093，China；4.School of Opto-Electronic Engineering，Changchun University of Science and Technology，Changchun 130022，China；5.Ningbo Oriental Cable Co.，Ltd.，Ningbo 315801，China

Received date: 2023-02-15

Revised date: 2023-03-12

Accepted date: 2023-04-16

Online published: 2023-08-23

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摘要

针对海洋用脐带缆用2507 超级双相不锈钢的电磁场腐蚀行为，利用动电位极化、电化学阻抗谱及Mott-Schottky 分析，研究电磁场变化对2507 超级双相不锈钢在模拟海水中电化学性质的影响；采用SEM 及EDS分析2507 超级双相不锈钢的腐蚀形貌及产物。结果表明:电磁场会促进2507 超级双相不锈钢在3.5%NaCl 溶液中的腐蚀；随着电磁场强度的增加，自腐蚀电位下降，阻抗降低，腐蚀加剧；2507 超级双相不锈钢在3.5%NaCl 溶液中形成的钝化膜半导体产生P-N 转化，励磁电流越大，转化电位越负。

关键词： 电磁场; 双相不锈钢; 电化学; 腐蚀

本文引用格式

黄泽政, 唐楚天, 黄仲佳, 毛飞雄, 高慧杰, 陈凯, 俞国军 . 电磁场对2507 超级双相不锈钢腐蚀行为的影响[J]. 材料保护, 2023 , 56(7) : 64 -69 . DOI: 10.16577/j.issn.1001-1560.2023.0162

Abstract

Aiming at the electromagnetic corrosion behavior of 2507 super duplex stainless steel used for ocean umbilical cable，the effects of electromagnetic field changes on the electrochemical properties of 2507 super duplex stainless steel in simulated seawater were studied by potentiodynamic polarization，electrochemical impedance spectroscopy and Mott Schottky analysis.Subsequently，SEM and EDS were used to analyze the corrosion morphology and products of 2507 super duplex stainless steel.Results showed that the electromagnetic field could promote the corrosion of 2507 super duplex stainless steel in 3.5%NaCl solution.As the intensity of the electromagnetic field increased，self-corrosion potential and the impedance decreased，so the corrosion became more serious.Meanwhile，the passivation film semiconductor formed by 2507 super duplex stainless steel in 3.5%NaCl solution generated P-N conversion，and the higher the excitation current，the more negative the conversion potential.

Key words： electromagnetic field; duplex stainless steel; electrochemistry; corrosion

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