Corrosion mechanisms relevant to high-level waste repositories |
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| Authors: | Ann Chidester Van Orden |
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| Institution: | aNational Institute of Standards and Technology (Formerly National Bureau of Standards), Center for Chemical Technology, Gaithersburg, MD20899, U.S.A. |
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| Abstract: | Corrosion is the destructive reaction of metals with their environment. The environment associated with a waste container is an extremely complex one, creating many possibilities for corrosion of the waste container. The different basic types of corrosion are governed by different equations and reactions. Schematic drawings and photographs illustrate the mechanisms of corrosion and factors which influence the forms of corrosion are outlined. There are techniques for testing the susceptibility to certain types of corrosion, and some standard test procedures have been developed. Predictive models have been proposed for crevice corrosion, stress corrosion cracking and scale formation. Existing models and extrapolations are all subject to limits on their applicability. |
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