J. Mater. Sci. Technol. ›› 1994, Vol. 10 ›› Issue (6): 411-417.

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Corrosion Behaviour of Stainless Steel in Acidic Water-Organic Solvent Mixtures

A .A.Khedr; I.Z.Selim; K.M.El-Sobki and O.S.Shehata(Physical Chemistry Dept., National Research Centre, Dokki, Cairo, Egypt)   

  • 收稿日期:1994-11-28 修回日期:1994-11-28 出版日期:1994-11-28 发布日期:2009-10-10

Corrosion Behaviour of Stainless Steel in Acidic Water-Organic Solvent Mixtures

A .A.Khedr; I.Z.Selim; K.M.El-Sobki and O.S.Shehata(Physical Chemistry Dept., National Research Centre, Dokki, Cairo, Egypt)   

  • Received:1994-11-28 Revised:1994-11-28 Online:1994-11-28 Published:2009-10-10

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摘要： l-IntroductionCorrosionande1ectrochemicalbehaviourofmetalsinnon-aqueousandmixedsolventsareofcurrentinterest[l-5].Theimportanceofinvestiga-tioninthisareaisdictatedbydevelopmentsinthechemicalandpetrochemicalindustries,advancesinchemicalengineering,andtheprobIemsarisingwiththeuseoffuels.Theincreasinguseofnon-aqueoussolutionsinvariouselectrochemicaldeviceshascreatednewcorrosionproblemsinvoIvingth....

Abstract: Electrochemical behaviour of stainless steel type 430 in acidic solutions of methanol, ethanol and in their binary mixtures with water (from 0 to 100% alcohol) at 25℃ has been studied. using potentiostatic poIarization technique and weight loss method. It was found that the corrosion rate of the metal was affected by the physico-chemical properties of the media such as, viscosity, state of solvation, molar volume contraction, proton availability and dielectric constant, it was demonstrated from the potentiostatic study that the active passive transition strongly depended on the concentration of the acid, and on the water content of the media.