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Investigation of Fine Biomachining of Metals by Using Microbially Influenced Corrosion

Research Project

Project/Area Number 12650715
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionYAMAGUCHI UNIVERSITY

Principal Investigator

KUMADA Makoto  Yamaguchi University, Faculty of Engineering, Professor, 工学部, 教授 (60284262)

Co-Investigator(Kenkyū-buntansha) MIYUKI Hideaki  Sumitomo Metal Industries Ltd, Group Manager, 総合技術研究所, 研究主幹(研究職)
MAEDA Syuji  Yamaguchi Prefectual Industrial Technology Institute, Special Researcher, 生産システム部, 専門研究員(研究職)
KOBUCHI Shigetoshi  Yamaguchi University, Center for Collaborative Research, Associate Professor, 教授 (30225560)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2001: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsIron oxidizing bacteria / Microbially influenced corrosion / Fine biomachining / Mild steel / Copper / Surface roughness / Inhibitor / インヒビター / 酸性環境 / 微生加工技術
Research Abstract

In order to use microbially influenced corrosion (usually MIC) for the fine biomachining of metals, influence of pH on both culture of Thiobacillus Ferrooxidans of a kind iron oxidizing bacteria and biomachining mass loss of mild steel and copper in 9K medium and the and the bacteria-cultured solution has been investigated. Furthermore, the biomachining mechanism of metaks has been investigated both by electrochemical measurements in 9K medium and the bacteria-cultured solution and observations of the surface fils.
The cells of bac-teria increased with culture time in 9k medium of pH 1.5. 2.0. 2.5 and 3.0. though they became maximum on 3 to 4 days at other pH except 1.5. The biomachining mass loss of mild steel and copper in the bacteria-cultured solution became larger at pH 1.5 than other pH and then after it became the least at pH 2.5, it increased again at pH 3.0. Fe_2 (SO_4)_3 whi-ch was produced through culture of bacteria accelerated biomachining mass loss of iron andcopper as oxi … More dizing agent. Biomachining mass loss of iron and copper were respectively about 30 mm/y and 6 mm/y of dissolution in 9K medium and the bacteria-cultured solution.
The surface of mild steel was rougher than copper's in 9K medium and the bacteria-cultured solution. The surface roughness of mild steel was about 30 μm after biomachining in bacteria-cultured solution. On the other hand, the copper's roughness was about 3 μm. Both mild steel and copper were generally attacked. But localized pitting attacks were observed on the surface microstructures of mild steel through low magnification in 9K medium and the bacteria-cultured solution. In all solution, copper was generally attacked. The biomachined surface of copper differed from that of mild steel in the point of the very fine structures.
Cathodic polarization curves of mild steel depolarized greatly in the region of -750 to -900 mV zs SCE in the bacteria-cultured solution. This depolarization caused by the reduction reaction of Fe^<3+> + e → Fe^<2+> accelerated the dissolution of metals. In 9K medium, the dissolution of mild steel and copper was prevented by FeSO_4 film, however, in the bacteria-cultured solution FeSO_4 film was not formed owing to the action of bacteria and the dissolution was accelerated by oxidizing effect of Fe^<3+> Less

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 熊田 誠: "微生物腐食を応用した金属の微細加工"高温学会誌. 27. 10-19 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 熊田 誠: "微生物腐食を応用した金属の微細加工に関する研究-鉄酸化細菌(チオバチルス・フェロオキシダンス)を用いた金属の微細加工における鉄鋼と銅の違い"材料と環境. 50. 411-417 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 熊田 誠: "微生物腐食を応用した金属の微細加工に関する研究-9K培地及び鉄酸化細菌の培養溶液中における鉄鋼及び銅の電気化学的測定と表面生成皮膜の観察"材料と環境. 50. 418-423 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 熊田 誠: "微生物を利用した金属加工"大阪大学接合科学研究所全国共同利用研究所研究成果発表論文集. 89-98 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Kumada: "Investigation of Fine Biomachining of Metals by Using Microbially Influenced Corrosion"Proceedings of the Second International Conference on Enviromental Sensitive Cracking and Corrosion Damage. 101-108 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Makoto Kumada, and Shigetoshi Kobuchi: "Fine Biomachining of Metals by Using Microbially Influenced Corrosion"Journal of KOON GAKAI. Vol.27. 10-19 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Makoto Kumada, Tetsuya Kawakado, Shigetoshi Kobuchi, Yoshiyuki Uno, Shuji Maeda, and Hideaki Miyuki: "Investigation of Fine Biomachining of Metals by Using Microbially Influenced Corrosion-Differences between Steel and Copper in Metal Biomachining by using Thiobacillus Ferrooxidans -"Zairyo-to-Kankyo. Vol.50. 411-417 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Makoto Kumada, Shigetoshi Kobuchi, Tetsuya Kawakado, Noriko Foriuchi, Yoshiyuki Uno, Takahiro Yamada, Shuji Maeda, and Hideaki Miyuki: "Investigation of Fine Biomachining of Metals by Using Microbially Influenced Corrosion - Electrochemical Measurements of Mild Steel and Copper in 9K Medium and Cultured Solution of Thiobacillus Ferrooxidans and Observations of Surface Films -"Zairyo-to-Kankyo. Vol.50. 418-423 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Makoto Kumada, and Shigetoshi Kobuchi: "Metal Biomachining by using Thiobacillus Ferrooxidans"Proceedings of Conference on Research Results Presentation of Joint Science Research Laboratory of Osaka University. 89-98 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Makoto Kumada, Shigetoshi Kobuchi, Yoshiyuki Uno, Shuji Maeda, and Hideaki Miyuki: "Investigation of Fine Biomachining of Metals by Using Microbially Influence Corrosion"Proceedings of the Second International Conference on Environment Sensitive Cracking and Corrosion Damage. 101-108 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 熊田 誠: "微生物腐食を応用した金属の微細加工に関する研究-鉄酸化細菌(チオバチルス・フェロオキシダンス)を用いた金属の微細加工における鉄鋼と銅の違い"材料と環境. 50・9. 411-417 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 熊田 誠: "微生物腐食を応用した金属の微細加工に関する研究-9K培地及び-鉄酸化細菌の培養溶液中における鉄鋼及び銅の電気化学的測定と表面生成皮膜の観察"材料と環境. 50・9. 418-423 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 熊田 誠: "微生物を利用した金属加工"大阪大学接合科学研究所全国共同利用研究所成果発表論文集. 89-98 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Kumada: "Investigation of Fine Biomachining of Metals by Using Microbially lnfluenced Corrosion"Proceedings of the Second International Conference on Enviromental Sensitive Cracking and Corrosion Damage. 101-108 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 熊田誠: "微生物腐食を応用した金属の微細加工"高温学会誌. 27・1. 10-19 (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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