Tuesday, March 18, 2008 - 2:55 PM
Convention Center, Second Level, 220 (Ernest N. Morial Convention Center)

Electrochemical Corrosion Study of Effect of Corrosion Products from Engineering Structures on the Further Corrosion Behavior of Alloy 22 in Yucca Mountain Repository

Suresh C. Divi, Dhanesh Chandra, and Jaak Daemen, University of Nevada Reno; Raul B. Rebak, GE Global Research

Series of tests are designed to test the effect of corrosion products on the further corrosion behavior of Alloy 22. When infiltrated water eventually reaches the container, there is a possibility of Alloy 22 corrosion can happen. Corrosion could be in the form of slow passive corrosion or localized corrosion. Also, corrosion products from the degradation of the support drift beams and drip shield may enter in contact with the container. That is, it would be useful to determine how the accumulated corrosion products from the engineered structures may affect the behavior of Alloy 22. There are three options, the corrosion products may increase the corrosion rate of Alloy 22, have no effect or even act as inhibitors to further corrosion. In this electro chemical corrosion study of Alloy 22,an acidic salt solution with the addition of corrosion products such as 0.0lM Fe3+, 0.01M Ni2+ and others are used.