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Corrosion Resistance of Heat-Treated NST 37-2 Steel in Hydrochloric Acid Solution

DOI: 10.4236/jmmce.2013.11001    3,904 Downloads   6,010 Views   Citations

ABSTRACT

Corrosion of metal components constitutes a major challenge in many engineering systems, with appropriate design, proper material selection, and heat treatment as commonly used control strategies. In this study, the corrosion behaviour of heat-treated (annealed, normalised, hardened, and tempered) NST 37-2 steel in three concentrations (1.0, 1.5 and 2.0 M) of hydrochloric acid solution was investigated using weight loss and electrode-potential methods. Results showed that corrosion rate increased with increase in acid concentration. The decreasing order of corrosion resistance was Tempered > Annealed > Normalised > Hardened > Untreated. The surface pictures of the heat-treated and untreated samples showed uniform and pitting corrosion with the latter becoming more pronounced as concentration increased.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Fadare and T. Fadara, "Corrosion Resistance of Heat-Treated NST 37-2 Steel in Hydrochloric Acid Solution," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 1, 2013, pp. 1-7. doi: 10.4236/jmmce.2013.11001.

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