ELECTROCHEMICAL CORROSION BEHAVIOR OF TRIP STEEL IN 3.5%NaCl SOLUTION

J Chin Soc Corr Pro

2010, Vol. 30

Issue (3): 203-206 DOI:

Research Articles

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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

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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

Received: 07 January 2010

ZTFLH:

TG172.2

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

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Cite this article:

LI Zhuang, XIA Ming, GUAN Penglai, GUO Xiangmin. ELECTROCHEMICAL CORROSION BEHAVIOR OF TRIP STEEL IN 3.5%NaCl SOLUTION. J Chin Soc Corr Pro, 2010, 30(3): 203-206.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2010/V30/I3/203

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