Microbiologically Induced Corrosion – Prevention and Analysis
Posted by Rob in Corrosion Analysis on 04. Jun, 2010 | 2 Comments
The first line of defense against Microbiologically Induced Corrosion (MIC) is cleanliness. General corrosion prevention techniques are a good starting point since once corrosion begins, the introduction of MIC producing bacteria will greatly accelerate the process. Once bacteria are established, both anaerobic bacteria which “tunnel” into metal, and other forms which adhere under biofilms, are [...]
Microbiologically Induced Corrosion
Posted by Rob in Corrosion Analysis on 03. Jun, 2010 | 1 Comment
Microbiologically Induced Corrosion (MIC) occurs as both general corrosion and pitting corrosion, though localized pitting is the more definitive form and more likely to result in dramatic system failures. Low flow areas in circulating systems such as heat exchangers and process piping are particularly susceptible since these “stalled flow” locations provide bacteria with the opportunity [...]
Biological Corrosion of Metals
Posted by Rob in Corrosion Analysis on 02. Jun, 2010 | 1 Comment
Desulfovibrio vulgaris, a sulfur reducing bacteria, generate hydrogen sulfide as a metabolic bi-product. This species has been implicated in MIC – Microbiologically Induced Corrosion – in iron, steel, stainless steel, aluminum, zinc and copper alloys. The cost of corrosion to the US economy is estimated at 4.2% of the Gross National Product according to a [...]
