TRIP钢在3.5%NaCl 溶液中的腐蚀电化学行为

中国腐蚀与防护学报

2010, Vol. 30

Issue (3): 203-206

研究报告

本期目录 | 过刊浏览

TRIP钢在3.5%NaCl 溶液中的腐蚀电化学行为

李壮¹,夏鸣²,关蓬莱²,郭向民¹

1. 沈阳航空航天大学材料科学与工程学院沈阳 110136
2. 沈阳航空航天大学理学院沈阳 110136

ELECTROCHEMICAL CORROSION BEHAVIOR OF TRIP STEEL IN 3.5%NaCl SOLUTION

LI Zhuang¹, XIA Ming², GUAN Penglai², GUO Xiangmin¹

1. School of Materials Science and Engineering, Shenyang University of Aeronautical and Astronautics, Shenyang 110136
2. School of Science, Shenyang University of Aeronautical and Astronautics, Shenyang 110136

全文: PDF(1167 KB)

摘要:

用盐雾加速和极化曲线试验方法研究了TRIP钢在3.5%NaCl 溶液中的腐蚀电化学行为。结果表明：两种试样盐雾加速试验后表面均有大面积腐蚀产物出现，且极化曲线均活化。未添加合金元素(A钢)的腐蚀率远高于添加合金元素的(B钢)； B钢较A钢的自腐蚀电位明显升高，其腐蚀电流密度下降；B钢表面锈层较为致密，而A钢锈层则相对较为疏松。B钢获得了相对较好的耐蚀效果，主要原因是由于 Al、Cu、Cr、Mo、Ni等合金元素在锈层以及锈层与基体的界面中富集，改变了 TRIP钢电化学性质所致。

关键词 ： TRIP钢, 盐雾试验, 极化曲线, 腐蚀, 电化学

Abstract：

Electrochemical corrosion behavior of TRIP steel in 3.5%NaCl solution was investigated by salt spray test and potentiodynamic polarization curves. The results indicated that large corrosion products were obtained on the specimen surface. Their potentiodynamic polarizations were all activated. The corrosion rate of steel A was significantly higher than that of steel B containing alloying elements. The corrosion potential and current density of steel B were increased and decreased, respectively. The rust layer of steel B was compact and densified compared to steel A. A satisfactory corrosion resistant effect was obtained for steel B. This is attributed to the additions of alloying elements, such as Al，Cu，Cr，Mo，Ni, etc. The enrichment of these alloying elements within the rust layer contributes to the improvement of electrochemical characteristic of TRIP steel.

Key words： TRIP steel salt spray test potentiodynamic polarization corrosion electrochemistry

收稿日期: 2010-01-07

ZTFLH:

TG172.2

基金资助:

辽宁省教育厅项目(2008535)和沈阳市应用基础研究项目（1071198-1-00）资助

通讯作者: 李壮 E-mail: Lizhuang20047@163.com

Corresponding author: LI Zhuang E-mail: Lizhuang20047@163.com

作者简介: 李壮，男，1964生，博士后，副教授，研究方向为钢铁材料的组织与性能

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引用本文:

李壮,夏鸣,关蓬莱,郭向民. TRIP钢在3.5%NaCl 溶液中的腐蚀电化学行为[J]. 中国腐蚀与防护学报, 2010, 30(3): 203-206.
LI Zhuang. ELECTROCHEMICAL CORROSION BEHAVIOR OF TRIP STEEL IN 3.5%NaCl SOLUTION. J Chin Soc Corr Pro, 2010, 30(3): 203-206.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I3/203

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