地下水中の好・嫌気性菌によるSUS304LおよびSUS316L鋼溶接部の微生物誘起腐食(第一報)

• 菊地 靖志

  大阪大学接合科学研究所

• 小澤 正義

  大阪大学接合科学研究所(現:(財)発電設備技術検査協会)

• 塔本 健次

  大阪大学接合科学研究所

• 大西 秀人

  大阪大学大学院生(現:(株)荏原製作所)

• 坂根 健

  武田薬品工業(株)開拓第4研究所

• 安斉 敏雄

  (株)高田工業所

書誌事項

タイトル別名

• Microbiologically Influenced Corrosion of SUS304L and SUS316L Welds Caused by Aerobic and Anaerobic Bacteria in Groundwater (I)
• 表面処理・腐食 地下水中の好・嫌気性菌によるSUS304LおよびSUS316L鋼溶接部の微生物誘起腐食(第1報)--研究室における再現実験と腐食挙動
• ヒョウメン ショリ フショク チ カスイチュウ ノ コウ ケンキセイキン ニ ヨル SUS304L オヨビ SUS316L コウ ヨウセツブ ノ ビセイブツ ユウキ フショク ダイ1ポウ ケンキュウシツ ニ オケル サイゲン ジッケン ト フショク キョドウ
• 研究室における再現実験と腐食挙動
• Laboratory Simulation Studies and Corrosion Behavior

抄録

Microbiologically influenced corrosion was suspected in a corrosion failure of stainless steel (SUS316L) piping, carrying saline groundwater. Laboratory simulation studies were planned to find out the mechanism of the corrosion. The groundwater from the same plant was transferred to the laboratory aseptically and used for the experiment. Both SUS316L and SUS304L welds (base metal, heat affected zone, weld metal) were exposed to the test solution. After 40 d, corrosion sites were observed on the surface of coupons exposed to non-sterile groundwater supplemented with nutrients. In case of both sterile and non-sterile groundwater devoid of nutrient, the corrosion sits were not observed. Therefore, it is assumed that the corrosion occurrence requires bacteria, their activity and metabolism. The form of corrosion was pitting for base metal and heat affected zone, whereas, weld metal showed skeletal corrosion caused by preferential attack on γ-austenite.<BR>Generally, the pH showed no change during exposure test. The potential increased during exposure to nutrient contained non-sterile groundwater for all coupons. In the case of both sterile and non-sterile groundwater devoid of nutrient, the potential did not show an increase for all the coupons. The potential increase that is influenced by bacteria is assumed to be the reason for the easy occurrence of corrosion.

収録刊行物

• 鉄と鋼

  鉄と鋼 88 (10), 658-663, 2002

  一般社団法人 日本鉄鋼協会

キーワード

• MIC
• SUS316L
• bacteria
• ground water
• γ-austenite

詳細情報

• CRID: 1390001205183066624
• NII論文ID: 110001457369
• NII書誌ID: AN00151251
• DOI: 10.2355/tetsutohagane1955.88.10_658
• ISSN: 18832954
• ISSN: 00211575
• ISSN: http://id.crossref.org/issn/00211575
• NDL書誌ID: 6292666
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6292666
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane1955/88/10/88_10_658/_pdf
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可