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| 907A STEEL CORROSION IN ARTIFICIAL SULFATE REDUING BACTERIA BIOFILM |
| DUAN Dongxia1,2, CHEN Xiguang1, LIN Cunguo2 |
1. College of Marine Science, Ocean University of China, Qingdao 266003
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao 266101 |
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Abstract Biofilm is one of the main factors that influence metal corrosion. According to the structure and property of biofilm, the compound of natural biopolymer agar and SRB cells were deposited on 907A surface. Artificial biofilm was produced. The dissolved oxygen concentration in artificial biofilm was studied by microsensors. Environmental scanning electron microscopy (ESEM) and energy dispersive X-ray detector (EDAX) were used to study 907A corrosion under artificial biofilm. The result indicated that the oxygen concentration became lower and lower with the distance between metal surface and test location becoming small. The corrosion morphology and corrosion products of 907A were influenced by environment.
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Received: 16 August 2010
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Corresponding Authors:
DUAN Dongxia
E-mail: duandx@sunrui.net
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