Document Type

Technical Report

Publication Date



Metallurgical and Materials Engineering, University of Nevada, Reno


This report encompasses the work done for this fourth quarter of the year 2005, in accordance to cooperative agreement of University of Nevada system for the Task 019 “Subsurface Corrosion Research on Rock Bolt System, Perforated SS Sheets and Steel Sets for the Yucca Mountain Repository”, the overall objective of which is to conduct corrosion research and predict the durability of rock-bolts and other underground metallic roof supports. We have started oxidation tests using Thermogravimetric Analyzer (TGA), and Potentiodynamic tests to determine the corrosion rates of rock bolts, other support materials including bench mark materials.

In this quarter, we have also performed (1) Potentiodynamic tests were performed to determine corrosion rates (CR) of Swellex rock bolts and Split Sets rock bolts. In addition, experiments have been performed on 4340 steel and Alloy 22, but the analyses are not complete; for example, hydrogen permeation tests on baseline material, Alloy 22 and Thermogravimetric Analysis (MTGA) on Swellex rock bolts under pure O2 atmosphere.


Nevada – Yucca Mountain; Radioactive waste repositories; Rock bolts – Corrosion; Stainless steel – Stress corrosion


Materials Science and Engineering | Metallurgy | Structural Materials




Task ORD-FY04-019
Document No: SIP-UNR-040
DOE/UCCSN Cooperative Agreement Number DE-FC28-04RW12232