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Corrosion Protection of Metallic Waste Packages Using Thermal Sprayed Ceramic Coatings

Published online by Cambridge University Press:  10 February 2011

K. R. Wilfinger ,
J. C. Farmer ,
R. W. Hopper  and
T. E. Shell
K. R. Wilfinger
Affiliation:
Lawrence Livermore National Lab, P.O. Box 808, L-355, Livermore, CA 94550
J. C. Farmer
Affiliation:
Lawrence Livermore National Lab, P.O. Box 808, L-355, Livermore, CA 94550
R. W. Hopper
Affiliation:
Lawrence Livermore National Lab, P.O. Box 808, L-355, Livermore, CA 94550
T. E. Shell
Affiliation:
Lawrence Livermore National Lab, P.O. Box 808, L-355, Livermore, CA 94550
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Abstract

Ceramic coated carbon steel coupons were corrosion tested in water with dissolved salts to simulate exposure to evaporation concentrated groundwater in an underground nuclear repository. Metallography revealed no corrosion at the ceramic metal interface of dense coatings, even though electrical measurements demonstrated that the coatings were slightly porous. Experimental results and a model to predict corrosion rates influenced by a porous ceramic coating and coating lifetimes are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 927
Copyright
Copyright © Materials Research Society 1999

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References

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