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http://dx.doi.org/10.14773/cst.2019.18.6.312

Effects of Na2S, NaCl, and H2O2 Concentrations on Corrosion of Aluminum  

Lee, Ju Hee (Department of Advanced Materials Engineering, Chosun University)
Jang, HeeJin (Department of Advanced Materials Engineering, Chosun University)
Publication Information
Corrosion Science and Technology / v.18, no.6, 2019 , pp. 312-317 More about this Journal
Abstract
The objective of this study was to investigate the corrosion behavior of aluminum (AA1100) in a mixed solution of 0 ~ 0.1 g/L Na2S + 0.3 ~ 3 g/L NaCl + 0 ~ 10 mL/L H2O2. Potentiodynamic polarization tests were performed. Effects of solution compositions on corrosion potential, corrosion rate, and pitting potential of aluminum were statistically analyzed with a regression model. Results suggested that localized corrosion susceptibility of aluminum was increased in the solution with increasing concentration of NaCl because the pitting potential was lowered linearly with increasing NaCl concentration. On the contrary, H2O2 mitigated the galvanic corrosion of aluminum by increasing the corrosion potential. It also mitigated localized corrosion by increasing the pitting potential of aluminum. Na2S did not exert a noticeable effect on the corrosion of aluminum. These effects of different chemical species at various concentrations were independent of each other. Synergy or offset effect was not observed.
Keywords
Corrosion; Regression analysis; Hydrogen peroxide; Sodium chloride; Sodium sulfide;
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  • Reference
1 Joseph R. Davis, Corrosion of Aluminum and Aluminum Alloys, pp. 19 - 22, ASM international, OH (1999).
2 Ph. Gimenez, J. J. Rameau, and M. C. Reboul, Corrosion, 37, 673 (1981).   DOI
3 J. F. Bates and J. M. Popplewell, Corrosion, 31, 269 (1975).   DOI
4 V. S. Sastri, Green corrosion inhibitors: theory and practice, Vol. 10, John Wiley & Sons, New Jersey (2012).
5 ASTM G69-12, Standard Test Method for Measurement of Corrosion Potentials of Aluminum Alloys, ASTM International (2012).
6 M. S. Wiener, B. V. Salas, M. Q.-Nunez, and R. Zlatev, Corros. Eng., Sci. Techn., 41, 221 (2006).   DOI
7 Air Pollution: A Comprehensive Perspective, Budi Haryanto(ed.), InTech, Croatia, (2012). http://dx.doi.org/10.5772/2591
8 Sally A. Lesik, Applied Statistical Inference with MINITAB, 1st ed., pp. 1 - 464, CRC Press, Florida (2009).