Evaluation of corrosion characteristics of aluminum alloys in the bio-ethanol gasoline blended fuel by using a 2-electrode electrochemical impedance spectroscopy

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Abstract

The corrosion characteristics of the aluminum alloys were investigated in the bio-ethanol gasoline blended fuel at 100°C. The corrosion property of aluminum alloys was evaluated by an in-situ 2-electrode electrochemical impedance spectroscopy (EIS), weight loss test and time-pressure measurement. Surface analysis was carried out after immersion test. The impedance was increased at initial immersion time due to the formation of boehemite film (γ- AlOOH); after that, it was decreased due to the initiation of aluminum alkoxide reaction. The pressure of autoclave was increased because of the hydrogen gas from the aluminum-ethanol alkoxide reaction. It was verified that a 2-electrode EIS and time-pressure measurements were able to evaluate the corrosion resistance of aluminum alloys in the bio-ethanol gasoline blended solution.

Original languageEnglish
Title of host publicationNACE International - Corrosion 2013 Conference and Expo
StatePublished - 2013
EventCorrosion 2013 - Orlando, FL, United States
Duration: 17 Mar 201321 Mar 2013

Publication series

NameNACE - International Corrosion Conference Series
ISSN (Print)0361-4409

Conference

ConferenceCorrosion 2013
Country/TerritoryUnited States
CityOrlando, FL
Period17/03/1321/03/13

Keywords

  • 2-electrode electrochemical impedance spectroscopy (EIS)
  • Alkoxide reaction
  • Aluminum alloy
  • Bio-ethanol gasoline blended fuel

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