Accession Number : ADA336906

Title :   Inhibition of Microbiologically Influenced Corrosion.

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV

Personal Author(s) : Natishan, P. M. ; Jones-Meehan, J. ; Loeb, G. I. ; Gray, N. ; Little, B. J.

PDF Url : ADA336906

Report Date : NOV 1997

Pagination or Media Count : 14

Abstract : Two areas of work designed to provide a better understanding on the nature of microbial colonization of surfaces and microbiologically influenced corrosion are discussed. The first approach examined a mechanical sensing model to describe microbial colonization. Results obtained alter the exposure of a group polydimethylsiloxane polymers to an estuary environment provide support for this model. The second approach sought to determine it there is a relationship between microbial colonization' of certain metallic substrates and corrosion. Exposure of zirconium, chromium, niobium, tantalum. molybdenum. tungsten and 4340 steel to Postgate medium with 2.5% NaCI and sultate reducing bacteria (SRB) resulted in biofilms being formed on all samples. In the case of the zirconium, chromium, niobium, and tantalum samples. the weight loss after two years of exposure was negligible.

Descriptors :   *CORROSION RESISTANCE, *MICROBIOLOGY, *MICROORGANISMS, METALS, ENVIRONMENTS, DETECTION, EXPOSURE(GENERAL), METHYL RADICALS, BACTERIA, POLYMERS, MOLYBDENUM, SUBSTRATES, SILOXANES, SURFACES, SAMPLING, NIOBIUM, ZIRCONIUM, CHROMIUM, INHIBITION, TANTALUM, WEIGHT REDUCTION, TUNGSTEN, COLONIES(BIOLOGY), MECHANICAL COMPONENTS, ESTUARIES.

Subject Categories : Biochemistry
      Microbiology
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE