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Corrosion Studies of A216 Grade WCA Steel in Hydrothermal Magnesium-Containing Brines

Published online by Cambridge University Press:  28 February 2011

J. H. Haberman  and
D. J. Frydrych
J. H. Haberman
Affiliation:
Pacific Northwest Laboratory,(a) Richiand, WA 99352
D. J. Frydrych
Affiliation:
Pacific Northwest Laboratory,(a) Richiand, WA 99352
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Abstract

The U.S. Department of Energy's Salt Repository Project (SRP) is investigating the general corrosion resistance of cast mild steel as a candidate material for waste package containers. Evaluation of this material is being performed at the Pacific Northwest Laboratory in environments simulating expected repository conditions.

General corrosion studies of mild steel (ASTM A216 grade WCA) in the as-cast and normalized conditions were conducted in hydrothermal halitesaturated (saturated at ambient temperature) brine environments simulating a “dissolution” and an “inclusion” brine. Corrosion tests were also performed in brines similar to the inclusion brine but containing magnesium concentrations ranging from 1000 to 30,000 ppm to investigate the effect of magnesium on the corrosion behavior.

Corrosion rates of the cast mild steel were found to increase with increasing temperature and with increasing magnesium concentration. Some possible mechanisms that explain the observed behavior are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 112: Symposium P – Scientific Basis for Nuclear Waste Management XI , 1987 , 761
Copyright
Copyright © Materials Research Society 1988

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References

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