Surface Analytical Investigation of the Corrosion Behaviour of Ti(Pd) Samples

Abstract

For the deposition of vitrified HAW in a salt repository containers are necessary forming an additional barrier against leaching. The material must be resistant against salt brines originating from accidental flooding of the repository. Corrosion studies have been carried out at the “Institut für Nukleare Entsorgung” of KfK in order to determine the corrosion rates for different materials under various corrosion conditions¹. One of the materials showing low corrosion rates is titanium with a 0.2 wt.% admixture of palladium as corrosion inhibitor (Ti 99.8-Pd, TIKRUTAN RT 12, manufactured by Krupp-Stahl, Essen, Federal Republic of Germany). However, for extrapolations to extremely long standing times, a closer inspection of the chemical processes responsible for the corrosion is necessary.