Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Effects of Na2S, NaCl, and H2O2 Concentrations on Corrosion of Aluminum

AA1100의 부식에 미치는 Na2S, NaCl, H2O2 농도의 영향

  • Lee, Ju Hee (Department of Advanced Materials Engineering, Chosun University) ;
  • Jang, HeeJin (Department of Advanced Materials Engineering, Chosun University)
  • 이주희 (조선대학교 첨단소재공학과) ;
  • 장희진 (조선대학교 첨단소재공학과)
  • Received : 2019.12.13
  • Accepted : 2019.12.27
  • Published : 2019.12.31
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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.

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References

  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). https://doi.org/10.5006/1.3577557
  3. J. F. Bates and J. M. Popplewell, Corrosion, 31, 269 (1975). https://doi.org/10.5006/0010-9312-31.8.269
  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). https://doi.org/10.1179/174327806X132204
  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).