Cortest Columbus is investigating the long-term performance of container materials used for high-level waste packages as part of the information needed by the Nuclear Regulatory Commission to assess the Department of Energy’s application to construct a geologic repository for high-level radioactive waste. In one task of the program, a cyclic potentiodynamic polarization (CPP) technique was used to evaluate the corrosion behavior of the candidate container materials. In order to evaluate the expected range of environmental variables, a statistical experimental design approach was used. A Resolution IV experimental design for 15 variables was selected. The variables included temperature, pH, species present in the groundwater, and those generated by radiolysis. Complete matrices of CPP tests, which consist of tests in 33 environments, were performed on two candidate container materials; Type 304L Stainless Steel and Incoloy Alloy 825. In these tests, both alloys exhibited a wide range of behavior; including passive behavior, pitting and active corrosion. For each alloy, the environmental variables that affected corrosion behavior were identified.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
J.A. Beavers and N.G. Thompson, “Environmental Effects on Corrosion in the Tuff Repository”. Topical Report of Task 1 of NRC Contract (NRC-04-07-009), FIN D1692 to be issued as a NUREG.
G.H. Koch, J.M. Spangler and N.G. Thompson, The Use of Synthetic Environments For Corrosion Testing, ASTM STP 970, edited by P.E. Francis and T.S. Lee (American Society For Testing and Materials, Philadelphia, PA, 1988), pp 3–17.
ASTM G61 Standard Practice For Conducting Cyclic Potentiodynamic Polarization Measurements For Localized Corrosion, (American Society For Testing and Materials, Philadelphia, PA, 1988).
G.E.P. Box, W.G. Hunter and J.S. Hunter, Statistics for Experimenters, (John Wiley and Sons, New York, 1978).
K.G. Knauss, W.J. Beiriger, and D.W. Peifer, Technical Report, UCRL-53630. Lawrence Livermore National Laboratory, Livermore, CA, May, 1985.
V.M. Oversby, and K.G. Knauss, Technical Report UCRL-53442, Lawrence Livermore National Laboratory, Livermore, CA, September, 1983.
W.H. Yunker, Technical Report, HEDL-7612, Westinghouse-Hanford Co., Richland, WA, June, 1986.
R.S. Glass, G.E. Overturf, R.D. McCright, and R.A. Van Konynenburg, CA, Technical Report UCRL-92311, Lawrence Livermore National Laboratory, Livermore, CA, February, 1985.
J.A. Beavers and N.G. Thompson “Potentiodynamic Polarization Studies of Candidate Container Materials in Simulated Tuff Repository Environments.” Topical Report for Task 3 of NRC Contract (NRC-04-87-009), FIN D1692 to be issued as a NUREG.
About this article
Cite this article
Beavers, J.A., Thompson, N.G. & Harper, W.V. Potentiodynamic Polarization Studies of Candidate Container Materials in Simulated Tuff Repository Environments. MRS Online Proceedings Library 176, 533 (1989). https://doi.org/10.1557/PROC-176-533