ATTACHMENT OF BACTERIA TO CARBON STEEL WELDMENTS(Materials, Metallurgy & Weldability)
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概要
- 論文の詳細を見る
Adhesion of Bacillus sp. onto carbon steel weldments has been investigated. Carbon steel coupons were exposed to pure culture of Bacillus sp. in a diluted nutrient medium and initial period of bacterial adhesion was monitored. The area of bacterial adhesion was determined by image processing software. Results revealed differential attachment over different parts of the weld, such as weld metal, HAZ and base metal portions. Initially, ie. till 24hrs, the adhesion of bacteria showed a pattern of weld metal>HAZ> base metal eventhough the surface roughness was uniform. As time passed, this pattern is lost and HAZ harboured more bacteria than weld metal. Generally, base metal showed the lowest area of adhesion. From the present study, it is inferred that the difference in surface condition influences the bacterial adhesion of carbon steel initially. This preferential adhesion is deleterious and might contribute to preferential MIC attack of carbon steel weldments.
- 大阪大学の論文
著者
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KIKUCHI Yasushi
Osaka University
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TOHMOTO Kenji
Osaka University
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Tohmoto K
Osaka Univ. Osaka Jpn
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Kikuchi Y
Osaka Univ. Osaka Jpn
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SREEKUMARI Kurissery
Osaka University
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OZAWA Masayoshi
JAPEIC Tarasaki Center
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OZAWA Masayoshi
Osaka University
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Ozawa M
Osaka University
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Sreekumari K
Joining And Welding Research Institute Osaka University
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