Influence of mill scale and rust layer on the corrosion resistance of low-alloy steel in simulated concrete pore solution

Jin-jie Shi; Jing Ming

doi:10.1007/s12613-017-1379-4

Volume 24 Issue 1

Jan. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(1): 64-74

Jin-jie Shiand Jing Ming, Influence of mill scale and rust layer on the corrosion resistance of low-alloy steel in simulated concrete pore solution, Int. J. Miner. Metall. Mater., 24(2017), No. 1, pp. 64-74. https://doi.org/10.1007/s12613-017-1379-4

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Jin-jie Shiand Jing Ming, Influence of mill scale and rust layer on the corrosion resistance of low-alloy steel in simulated concrete pore solution, Int. J. Miner. Metall. Mater., 24(2017), No. 1, pp. 64-74. https://doi.org/10.1007/s12613-017-1379-4

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Research Article

Influence of mill scale and rust layer on the corrosion resistance of low-alloy steel in simulated concrete pore solution

Jin-jie Shi and
Jing Ming

+ Author Affiliations

Corresponding author:
Jin-jie Shi E-mail: jinjies@126.com
Received: 14 June 2016; Revised: 23 September 2016; Accepted: 26 September 2016

Abstract

Abstract

Electrochemical impedance spectroscopy, cyclic potentiodynamic polarization measurements, and scanning electron microscopy in conjunction with energy-dispersive X-ray spectroscopy were used to investigate the influence of mill scale and rust layer on the passivation capability and chloride-induced corrosion behaviors of conventional low-carbon (LC) steel and low-alloy (LA) steel in simulated concrete pore solution. The results show that mill scale exerts different influences on the corrosion resistance of both steels at various electrochemical stages. We propose that the high long-term corrosion resistance of LA steel is mainly achieved through the synergistic effect of a gradually formed compact, adherent and well-distributed Cr-enriched inner rust layer and the physical barrier protection effect of mill scale.
- steel reinforced concrete;
- low alloy steel;
- low carbon steel;
- steel corrosion;
- corrosion resistance

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