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Abstract
The corrosion behavior of heat treated mild steel in 0.1 M citric acid was studied using weight loss technique. Mild steel samples were heated at 650 and 950 ºC for 30, 60 and 90 min. The effect of heat treatment time and methods of cooling (normalizing, quenching and stress relief) on the corrosion resistance of mild steel in 0.1 M citric acid solution was also studied. The experimental results showed that the corrosion rates of the heat treated mild steel increased with time of heating irrespective of the cooling method used. The corrosion rates of samples treated at 650 ºC and 950 ºC at 30 and 90 min, respectively decreased with increase in weight loss. Also, the corrosion rate of mild steel treated at 950 ºC (normalizing and quenching) for 30 min were higher than those treated at 650 ºC normalizing and quenching) for 30 min. However, the samples cooled using stress relief method at 650 ºC showed higher corrosion rates compared to that at 950 ºC. The corrosion rates of mild steel treated at 650 ºC for 90 min, exhibited lower corrosion rate than hose treated at 950 ºC for 90 min. In general, mild steels heat treated at 650 ºC using normalized method showed lowest corrosion rates compared to the other cooling methods used. Also, heat treated at 950 ºC using stress relief showed lowest corrosion rate compared to the other cooling methods used.
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Copyright (c) 2017 Feyisayo V. Adams, Toyyibat O. Badmus, Eugene Uwiringiyimana
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
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D.A. Fadare and T.G. Fadara, J. Miner. Mater. Charact. Eng., 1, 1 (2013); https://doi.org/10.4236/jmmce.2013.11001.
S.K. Jepuria, Heat Treatment of Low-Carbon Steel. A Project Submitted to the Department of Mechanical Engineering, National Institute of Technology, Rourkela, India (2009).
H.D. Alvarenga, T.V. De Putte, N. Van Steenberge, J. Sietsma and H. Terryn, Metall. Mater. Trans., A Phys. Metall. Mater. Sci., 46, 123 (2015); https://doi.org/10.1007/s11661-014-2600-y.
M.I. Noor, K.N.A. Amir, A.K.A.K. Mohamad and M.A.H. Shaharudin, IOP Conf. Series: Mater. Sci. Eng., 114, 012108 (2016); https://doi.org/10.1088/1757-899X/114/1/012108.
J.D. Verhoeven, Steel Metallurgy for the Non-Metallurgist, ASM Interational: United State (2007).
C.W. Clarke, J. Inst. Locomotive Eng., 35, 3 (2006).
H. Chandler, Heat Treater’s Guide: Practices and Procedures for Irons and Steels, ASM Interational: United State, edn 2 (1994).
S.K. Singh and A.K. Mukharjee, Indian J. Chem. Technol., 18, 291 (2011).
C.A. Loto and M.A. Matanmi, Br. Corros. J., 24, 36 (1989); https://doi.org/10.1179/000705989798270423.
A. Afolabi and N. Peleowo, Effect of Heat Treatment on Corrosion Behaviour of Austenitic Stainless Steel in Mild Acid Medium, Int. Conf. Chem. Ecol. Environ. Sci. ICCEES’2011, pp. 380-383 (2011).
L. Popoola, A. Grema, G. Latinwo, B. Gutti and A. Balogun, Int. J. Ind. Chem., 4, 35 (2013); https://doi.org/10.1186/2228-5547-4-35.
E. Osarolube, I.O. Owate and N.C. Oforka, Sci. Res. Essays, 3, 224 (2008).
D.J. Boreman, B. Wimmer and K. Leewis, Pipeline Gas J., 227, 46 (2000).
R. Freeman and D. Silverman, Corrosion, 48, 463 (1992); https://doi.org/10.5006/1.3315961.
D. Silverman, Practical Corrosion Prediction Using Electrochemical Techniques, Uhlig’s Corrosion Handbook, edn 3 (2011).
V. Aquilanti, K.C. Mundim, M. Elango, S. Kleijn and T. Kasai, Chem. Phys. Lett., 498, 209 (2010); https://doi.org/10.1016/j.cplett.2010.08.035.
G.D. Smith and B.A. Baker, High Temperature Gases: In Corrosion Tests and Standards, ASM Interational: United State, edn 2 (2005).
R. Hu, A. Ornberg and J. Pan, J. Electrochem. Soc., 156, C341 (2009); https://doi.org/10.1149/1.3174383.
K.O. Oparaodu and G.C. Okpokwasili, Int. J. Environ. Bioremed. Biodegrad., 2, 243 (2014); https://doi.org/10.12691/ijebb-2-5-5.
S.O. Seidu and B.J. Kutelu, J. Miner. Mater. Charact. Eng., 1, 95 (2013); https://doi.org/10.4236/jmmce.2013.13018.