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Formation of Vivianite During Microbiologically Influenced Corrosion of Steels

Published online by Cambridge University Press:  25 February 2011

Michael McNeil  and
Jennifer McKay
Michael McNeil
Affiliation:
Office of Nuclear Regulatory Research, Nuclear Regulatory Commission, Washington DC 20555
Jennifer McKay
Affiliation:
Department of Earth Sciences, University of Western Ontario, London ON N6A 5B7
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Abstract:

Exposure of carbon and HY-80 high strength low alloy (HSLA) steels to anaerobic Postgate cultures containing sulfate reducing bacteria leads to production of mackinawite, Fe9S8, and vivianite, Fe3(PO4)2.8H2O, with minor amounts of other minerals, the vivianite being sometimes accompanied by siderite, FeCO3. The vivianite and mackinawite persist on exposure to air or oxygenated water. Green rust is a significant alteration product on some steels. The implications of these findings are discussed in light of present and possible future nuclear waste containers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 699
Copyright
Copyright © Materials Research Society 1994

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References

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