Experimental study of corrosion behavior for burnished aluminum alloy by EWF, EBSD, EIS and Raman spectra

Jinlong Lv, Hongyun Luo, Jinpeng Xie

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The effect of burnish process on 2024 aluminum alloy was studied by electron work function and electron backscattered diffraction (EBSD). Moreover, the corrosion resistance of thin passive films formed on 2024 aluminum alloy in borate buffer solutions was studied by the electrochemical impedance spectroscopy (EIS), the Mott-Schottky plots and the galvanostatic techniques. The composition of passive films was analyzed by Raman spectra. The results obtained indicated that the impedance increased due to burnish and this was attributed to decreased electron work function and higher current efficiency in the burnished aluminum alloy which led to thicker passive films. It was further supported by Raman spectra experiment. Moreover, the donor and acceptor concentration of passive films and their the semiconductor type have changed due to burnish.

Original languageEnglish
Pages (from-to)192-198
Number of pages7
JournalApplied Surface Science
Volume273
DOIs
Publication statusPublished - 2013 May 15

Keywords

  • Burnish
  • Electrochemical impedance spectroscopy
  • Electron backscattered diffraction
  • Electron work function
  • Raman spectra

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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