Pitting corrosion control using regenerative biofilms on aluminium 2024 in artificial seawater

D. Örnek; A. Jayaraman; T. K. Wood; Z. Sun; C. H. Hsu; F. Mansfeld

doi:10.1016/S0010-938X(01)00005-1

Pitting corrosion control using regenerative biofilms on aluminium 2024 in artificial seawater

D. Örnek, A. Jayaraman, T. K. Wood, Z. Sun, C. H. Hsu, F. Mansfeld

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

EIS has been used to follow the pitting process of Al 2024 during exposure to sterile artificial seawater (AS) for 30 days. In the presence of a bacterial biofilm produced by Bacillus subtilis pitting was also observed during the first two days, however for the remainder of the exposure period the Al alloy was passive. When the biofilm was genetically engineered to secrete polyglutamate or polyaspartate, an additional small increase in corrosion inhibition occured. Corrosion control using regenerative biofilms (CCURB) on Al 2024 in AS cannot be solely due to a reduction of the oxygen concentration at the metal surface since the experimental values of the corrosion potential E_corr became more noble in the presence of bacteria suggesting that production of an inhibiting species retained in the biofilm contributes to CCURB.

Original language	English (US)
Pages (from-to)	2121-2133
Number of pages	13
Journal	Corrosion Science
Volume	43
Issue number	11
DOIs	https://doi.org/10.1016/S0010-938X(01)00005-1
State	Published - Nov 2001

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/S0010-938X(01)00005-1

Cite this

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title = "Pitting corrosion control using regenerative biofilms on aluminium 2024 in artificial seawater",

abstract = "EIS has been used to follow the pitting process of Al 2024 during exposure to sterile artificial seawater (AS) for 30 days. In the presence of a bacterial biofilm produced by Bacillus subtilis pitting was also observed during the first two days, however for the remainder of the exposure period the Al alloy was passive. When the biofilm was genetically engineered to secrete polyglutamate or polyaspartate, an additional small increase in corrosion inhibition occured. Corrosion control using regenerative biofilms (CCURB) on Al 2024 in AS cannot be solely due to a reduction of the oxygen concentration at the metal surface since the experimental values of the corrosion potential Ecorr became more noble in the presence of bacteria suggesting that production of an inhibiting species retained in the biofilm contributes to CCURB.",

author = "D. {\"O}rnek and A. Jayaraman and Wood, {T. K.} and Z. Sun and Hsu, {C. H.} and F. Mansfeld",

note = "Funding Information: This project is being supported by the Electric Power Research Institute (contract WO8044-05). The authors acknowledge many helpful discussions with the contract monitor Dr. B.C. Syrett. The generous gifts of Bacillus cloning vectors and advice by Mario W. Chen and Dr. Vasantha Nagarajan of E.I. du Pont de Nemours, Inc. (Wilmington, DE) are gratefully acknowledged. ",

year = "2001",

month = nov,

doi = "10.1016/S0010-938X(01)00005-1",

language = "English (US)",

volume = "43",

pages = "2121--2133",

journal = "Corrosion Science",

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AU - Örnek, D.

AU - Jayaraman, A.

AU - Wood, T. K.

AU - Sun, Z.

AU - Hsu, C. H.

AU - Mansfeld, F.

N1 - Funding Information: This project is being supported by the Electric Power Research Institute (contract WO8044-05). The authors acknowledge many helpful discussions with the contract monitor Dr. B.C. Syrett. The generous gifts of Bacillus cloning vectors and advice by Mario W. Chen and Dr. Vasantha Nagarajan of E.I. du Pont de Nemours, Inc. (Wilmington, DE) are gratefully acknowledged.

PY - 2001/11

Y1 - 2001/11

N2 - EIS has been used to follow the pitting process of Al 2024 during exposure to sterile artificial seawater (AS) for 30 days. In the presence of a bacterial biofilm produced by Bacillus subtilis pitting was also observed during the first two days, however for the remainder of the exposure period the Al alloy was passive. When the biofilm was genetically engineered to secrete polyglutamate or polyaspartate, an additional small increase in corrosion inhibition occured. Corrosion control using regenerative biofilms (CCURB) on Al 2024 in AS cannot be solely due to a reduction of the oxygen concentration at the metal surface since the experimental values of the corrosion potential Ecorr became more noble in the presence of bacteria suggesting that production of an inhibiting species retained in the biofilm contributes to CCURB.

AB - EIS has been used to follow the pitting process of Al 2024 during exposure to sterile artificial seawater (AS) for 30 days. In the presence of a bacterial biofilm produced by Bacillus subtilis pitting was also observed during the first two days, however for the remainder of the exposure period the Al alloy was passive. When the biofilm was genetically engineered to secrete polyglutamate or polyaspartate, an additional small increase in corrosion inhibition occured. Corrosion control using regenerative biofilms (CCURB) on Al 2024 in AS cannot be solely due to a reduction of the oxygen concentration at the metal surface since the experimental values of the corrosion potential Ecorr became more noble in the presence of bacteria suggesting that production of an inhibiting species retained in the biofilm contributes to CCURB.

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JO - Corrosion Science

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ER -

Pitting corrosion control using regenerative biofilms on aluminium 2024 in artificial seawater

Abstract

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