Formation of vivianite during microbiologically influenced corrosion of steels

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:47912

McNeil, M ^[1]; McKay, J ^[2]

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1. Nuclear Regulatory Commission, Washington, DC (United States)
2. Univ. of Western Ontario, London (Canada)

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, Fe{sub 9}S{sub 8} and vivianite, Fe{sub 3}(PO{sub 4}){sub 2}{center_dot}8H{sub 2}O, with minor amounts of other minerals, the vivianite being sometimes accompanied by siderite, FeCO{sub 3}. 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.

• OSTI ID: 47912
• Report Number(s): CONF-931108-Vol.333; TRN: 95:011420
• Resource Relation: Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 29 Nov - 3 Dec 1993; Other Information: PBD: 1994; Related Information: Is Part Of Scientific basis for nuclear waste management XVII; Barkatt, A. [ed.] [Catholic Univ. of America, Washington, DC (United States)]; Van Konynenburg, R.A. [ed.] [Lawrence Livermore National Lab., CA (United States)]; PB: 964 p.
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
STEELS
CORROSION
BIODEGRADATION
CONTAINERS
RADIOACTIVE WASTE DISPOSAL
SULFATE-REDUCING BACTERIA
KINETICS
MICROORGANISMS
IRON ALLOYS
SCANNING ELECTRON MICROSCOPY