A STUDY ON GENERAL KINETIC BEHAVIOR OF CORROSION FOR SOME ALLOYS IN ACID MEDIUM

Abstract

Lead alloys including pure pb, pb – Sn, pb – Se and pb – Sn – Sewere prepared which confirmed by X – Ray. Corrosion potential and corrosioncurrent density and then the general kinetic behavior for corrosion were studied inthe temperature range 293 – 313 K in 5M sulfuric acid solution. The resultsindicated that the rate of corrosion for all alloys increased with the rise oftemperature. The general kinetic behavior of the alloys followed the well knownArrhenius equation. The values of log A and Ea effected by adding Tin andSelenium, thus decreasing or increasing the rate of corrosion for alloys. A linearrelationship was found to exist between the values of Arrhenius equation log A andEa which is found to describe the corrosion activity of the alloys.