کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
194475 459793 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of marine biofilms on corrosion: A concise review
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The influence of marine biofilms on corrosion: A concise review
چکیده انگلیسی

The following is a concise review of the literature that addresses the impact of marine biofilms on two phenomena—ennoblement of corrosion potential and sulfide derivitization due to sulfate-reducing bacteria. A universally defined mechanism of potential ennoblement has not been established. Extent of ennoblement varies among locations and the extent of ennoblement for a particular material cannot be used to predict an increased likelihood of localized corrosion. There is some controversy as to the susceptibility of low- and medium-grade stainless steels. Carbon steel and copper alloys are susceptible to sulfide derivitization but thermodynamic models cannot predict the susceptibility of these materials. Laboratory experiments designed to provide data on susceptibility to sulfide derivitization have produced conflicting results because of the following: (1) laboratory media can contain anions that inhibit localized corrosion, (2) laboratory media can contain yeast extract that interferes with electrochemical measurements, and (3) deaeration procedures can produce environments that are not conducive for the growth of sulfate-reducing bacteria. In general, alloys that undergo ennoblement are not vulnerable to sulfide derivitization and conversely, alloys that are subject to sulfide derivitization do not become ennobled.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 54, Issue 1, 1 December 2008, Pages 2–7
نویسندگان
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