Accession Number:

ADA229840

Title:

Mineralogical Fingerprints for Corrosion Processes Induced

Descriptive Note:

Corporate Author:

NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS

Report Date:

1990-01-01

Pagination or Media Count:

28.0

Abstract:

Mineralogical data, thermodynamic stability Pourbaix diagrams, and the simplexity principle for precipitation reactions are used to rationalize corrosion product mineralogy in a variety of situations involving both fresh and saline water and to demonstrate the action of SRB in these cases. Methods for using corrosion product mineralogy as a diagnostic tool for microbiologically influenced corrosion MIC are discussed. Many sulfides under near-surface biosphere conditions can only be produced by microbiological action on specific precursor materials such as metals. If a corrosion process can be shown to have taken place in a pH-Eh range typical of near-surface biosphere conditions and no compelling kinetic arguments can be adduced, mineralogical and geochemical data indicate that the presence of these minerals as corrosion products implies that sulfate reducing bacteria SRB were active. Keywords Biofouling Corrosion Biodeterioration Electrochemistry.

Subject Categories:

  • Environmental Health and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE