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Fe17Mn5Si10Cr5Ni记忆合金在人造海水中的腐蚀行为研究

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  • 大连海事大学船舶与海洋工程学院,辽宁 大连 116026
林成新(1963-),博士,教授,博士生导师,主要从事机械、材料及其交叉课题的研究,电话:13889587086,E-mail:lch_xin@126.com

收稿日期: 2022-08-20

  修回日期: 2022-09-25

  录用日期: 2022-10-19

  网络出版日期: 2023-08-11

基金资助

大连市科技创新基金重点学科重大项目(2020JJ25CY016)资助

Study on Corrosion Behavior of Fe17Mn5Si10Cr5Ni Memory Alloy in Artificial Seawater

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  • School of Naval Architecture and Ocean Engineering,Dalian Maritime University,Dalian 116026,China

Received date: 2022-08-20

  Revised date: 2022-09-25

  Accepted date: 2022-10-19

  Online published: 2023-08-11

摘要

为了使FeMnSi 记忆合金管接头广泛应用于海水管路间的连接和修复,通过电化学测试、腐蚀表面分析技术、腐蚀产物分析技术,分析了Fe17Mn5Si10Cr5Ni 记忆合金在人造海水中的腐蚀行为及机理。结果表明:Fe17Mn5Si10Cr5Ni 记忆合金在人造海水中可发生电化学腐蚀,3 h 时其自腐蚀电位为-0.185 V,腐蚀时间延长其自腐蚀电位逐渐下降;Fe17Mn5Si10Cr5Ni 记忆合金在人造海水中的腐蚀形式为点蚀;腐蚀产物呈黑褐色,产物疏松、黏附性差且与基体结合强度低;腐蚀产物为Fe2O3、Fe3O4、FeO(OH)。

本文引用格式

于跃群, 种建涛, 林成新 . Fe17Mn5Si10Cr5Ni记忆合金在人造海水中的腐蚀行为研究[J]. 材料保护, 2023 , 56(2) : 57 -63 . DOI: 10.16577/j.issn.1001-1560.2023.0035

Abstract

For widely applying Fe17Mn5Si10Cr5Ni memory alloy pipe joints in the connection and repair of seawater pipelines,the corrosion behaviors and mechanism of Fe17Mn5Si10Cr5Ni memory alloy in artificial seawater were analyzed by electrochemical test,corrosion surface analysis technology and corrosion product analysis technology.Results showed that Fe17Mn5Si10Cr5Ni memory alloy could undergo electrochemical corrosion in artificial seawater,and its self-corrosion potential at 3 h was -0.185 V.The self-corrosion potential decreased gradually with the increase of corrosion time,and the corrosion form of Fe17Mn5Si10Cr5Ni memory alloy in artificial seawater was pitting corrosion.Furthermore,the corrosion products were black brown and loose,with a poor adhesion and low bonding strength with the substrate.The corrosion products were Fe2O3,Fe3Oand FeO(OH).

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