Autors: Tzaneva, B. R., Fachikov L.B., Raicheff R.G.
Title: The effect of Sulphates ions on the pitting corrosion of Cr-Mn-N steel in neutral halide solutions
Keywords: pitting corrosion, stainless steel, halide solutions, critical concentration

Abstract: The effect of concentration of halide ions (0,001  2,0mol/l NaX; X = Cl, Br, I) and sulphate ions (0,05 and 0,05mol/l Na2SO4) on the pitting corrosion resistance of Cr18Ni9 and Cr18Mn12N stainless steels has been studied using potentiodynamic polarisation measurements. The critical halide ion concentration [X-]cr beyond which the pitting occurs has been established. It is shown that the addition of sulphate ions to halide solutions increases the values of [X-]cr as well as of pitting and repassivation potentials of the stainless steels. The negligible effect of sulphate addition in concentrated halide solutions has been found.



    VIth Intern. Congress “MECHANICAL ENGINEERING TECHNOLOGIES’04”, vol. 5/73, pp. 76-79, 2004, Bulgaria, Scientific Proceedings of the Scientific-technical Union of mechanical engineering, ISSN 1310-3946

    Вид: публикация в международен форум