| Title: | Effects of surfactants and their mixtures on inhibition of the corrosion process of ferritic stainless steel |
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| Authors: | ID Fuchs-Godec, Regina (Author) |
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| Files: |  http://dx.doi.org/10.1016/j.electacta.2008.10.014
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | The corrosion inhibition characteristics regarding mixtures of cationic/zwitterionic types of surfactant (Myristyltrimethylammonium bromide/Palmitylsulfo-betaineas), and non-ionic surfactant TRITON-X-405 mixed with 1 mM of KBr, as corrosion inhibitors for stainless steel (SS) (type X4Cr13) in aqueous solutions of 2 M H2SO4 were investigated using potentiodynamic polarisation measurements. The polarisation data showed that mixtures of the surfactants used in this study acted as mixed-type inhibitors, adsorbing on the stainless steel surface in agreement with the Flory-Huggins adsorption isotherm. The tensiometric results of this study suggest the existence of a second state of aggregation for zwitterionic/cationic surfactant mixtures. From these values of the free energy of adsorption, which in both mixtures decreased with respect to a single surfactant, we concluded that the adsorption in mixtures was stronger. The mixtures studied here showed good inhibition properties for ferritic stainless steel type X4Cr13 in 2 M H2SO4 solution. |
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| Keywords: | corrosion inhibitor, cationic surfactant, Zwitterionic surfactant, Flory-Huggins isotherm, Sulphuric acid |
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| Year of publishing: | 2009 |
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| PID: | 20.500.12556/DKUM-27347  |
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| UDC: | 620.1 |
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| ISSN on article: | 0013-4686 |
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| COBISS.SI-ID: | 12746262 |
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| NUK URN: | URN:SI:UM:DK:YUWU5FBN |
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| Publication date in DKUM: | 01.06.2012 |
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| Views: | 1948 |
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| Downloads: | 125 |
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| Metadata: |    |
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| Categories: | Misc.
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