Severe corrosion damage may occur when gas transmission pipelines are exposed, at disbanded coating locations, to trapped waters containing sulfide followed by secondary exposure to air. Aerobic corrosion with sulfide was investigated in a long-term corrosion experiment in which corrosion was monitored by measurement of the corrosion potential and polarization resistance obtained from linear polarization resistance measurements. The properties and composition of the corrosion product deposits formed were determined using scanning electron microscopy, energy dispersive X-ray analysis, and Raman spectroscopy. A switch from aerobic to aerobic-with-sulfide corrosion doubles the relative corrosion rate. (C) 2012 Elsevier Ltd. All rights reserved.
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China
Qatar Environm & Energy Res Inst QEERI, POB 34110, Doha, QatarUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Wang, Shidong
Shirazi, Hamed
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Shirazi, Hamed
Diao, Guijiang
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Diao, Guijiang
Farhat, Hanan
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Qatar Environm & Energy Res Inst QEERI, POB 34110, Doha, QatarUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Farhat, Hanan
Chen, Weixing
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
机构:
Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China
Qatar Environm & Energy Res Inst QEERI, POB 34110, Doha, QatarUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Wang, Shidong
Shirazi, Hamed
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Shirazi, Hamed
Diao, Guijiang
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Diao, Guijiang
Farhat, Hanan
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Qatar Environm & Energy Res Inst QEERI, POB 34110, Doha, QatarUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada
Farhat, Hanan
Chen, Weixing
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Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, CanadaUniv Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada