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 OJPC  Vol.4 No.4 , November 2014
Effect of Chloride Concentration on the Corrosion Rate of Maraging Steel
Hussam El Desouky1, Hisham A. Aboeldahab1,2*
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Abstract: The corrosion behavior of Maraging steel has been studied by using different techniques, including open circuit potential and polarization measurements in addition to microstructure examination such as optical microscopy and XRD (X-Ray Diffraction) investigation. The corrosion behavior of Maraging steel has been examined in sodium chloride solutions with different concentrations from 0.1 M to 2 M. It was found that the corrosion resistance of Maraging steel is inversely proportional with the concentration of sodium chloride solution. The corrosion resistance is directly proportional to the Mo and Ti content in the Maraging steel. Heat treatment of the Maraging steel improved its mechanical properties with no effect on the corrosion behavior as the precipitation of inter-metallic compounds leading to some galvanic action. However, sample IV having lower Mo content than sample V showed after heat treatment an improvement in the corrosion resistance.
Keywords: Maraging Steel, Polarization, Microstructure Examination, Optical Microscopy, XRD, Heat Treatment and Corrosion Resistance
Cite this paper: Desouky, H. , Aboeldahab, H. (2014) Effect of Chloride Concentration on the Corrosion Rate of Maraging Steel. Open Journal of Physical Chemistry, 4, 147-165. doi: 10.4236/ojpc.2014.44018.
References

[1]   Fathy, A., El-Faramawy, H.S., Mattar, T., Eissa, M. and Bleck, W. (2004) Metals, 1.

[2]   Shams El-Din, A.M. and Paul, N.J. (1990) Oxide Film Thickening on the Surface of Metals in Aqueous Solutions: A Critique of the Theory of Open-Circuit Potential Transients. Thin Solid Films, 189, 205-216. http://dx.doi.org/10.1016/0040-6090(90)90449-N

[3]   Hegazy, M.M. and Eissa, M.M. (1992) J. of the Faculty of Education, 17, 377.

[4]   Shams El-Din, A.M., Wang, L. and Saber, T.M.H. (1994) Behaviour of High Strength Molybdenum Containing Stainless Steels in Arabian Gulf Water. Part 1: Oxide Film Thickening. British Corrosion Journal, 29, 58-64. http://dx.doi.org/10.1179/000705994798267935

[5]   Greene, N.D. and Leonard, R.B. (1964) Comparison of Potentiostatic Anodic Polarization Methods. Electrochimica Acta, 9, 45-54. http://dx.doi.org/10.1016/0013-4686(64)80004-9

[6]   Fathy, A., Mattar, T., El-Faramawy, H.S. and Bleck, W. (2002) Materials Technology, 12, 549.

 
 
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