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

  • Sungkyunkwan University

Research output: Contribution to journalArticlepeer-review

Abstract

The corrosion characteristics of 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 pressure-time measurement. Surface analysis was carried out after immersion test. The polarization resistance of aluminum alloys 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 pressure-time measurements were able to evaluate the corrosion resistance of aluminum alloys in the bio-ethanol gasoline blended solution.

Original languageEnglish
Pages (from-to)26-31
Number of pages6
JournalFuel
Volume126
DOIs
StatePublished - 15 Jun 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

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

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