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Semiconducting behavior of temporarily protective oil coating on the surface of AISI 304 stainless steel in 5% Na2SO4 solution during its degradation

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Rohwerder,  Michael
Molecular Structure and Surface Modification, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Zhong, Q., Rohwerder, M., Zhao, Z., & Jin, Z. (2004). Semiconducting behavior of temporarily protective oil coating on the surface of AISI 304 stainless steel in 5% Na2SO4 solution during its degradation. Journal of the Electrochemical Society, 151(7), B446-B452. doi:10.1149/1.1756889.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0025-68C1-1
Abstract
In this paper, semiconducting behavior of temporarily protective oil coating on the surface of AISI 304 stainless steel in 5% Na2SO4 solution under corrosion potential was studied by utilizing potential-capacitance method and Mott-Schottky analysis. It was pointed out that there existed semiconducting behavior of temporarily protective oil coating during its degradation. With increasing of immersion time, temporarily protective oil coating transformed from p-type semiconductor at the early stage of immersion to n-type semiconductor. N-D and N-A of oil coating in different transition process were also calculated. (C) 2004 The Electrochemical Society.