Corrosion characteristics of nickel, copper, and stainless steel in a Lewis neutral chloroaluminate ionic liquid

Pei Chiung Lin, I. Wen Sun, Jeng-Kuei Chang*, Chung Jui Su, Jing Chie Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Corrosion of nickel, copper, and 316 stainless steel in aluminum chloride/1-ethyl-3-methylimidazolium chloride ionic liquid (IL) is investigated by means of electrochemical techniques. SEM analyses are performed to examine the reaction mechanisms. While Ni shows good stability, Cu has high corrosion susceptibility in this IL. For 316 steel, pitting corrosion occurs at a lower potential than that of passivation. In the non-aqueous, low-oxygen, and high-ion-containing IL, the material corrosion properties are totally different from those found in conventional environments. Since ILs have found increasing potential in diverse applications, new corrosion prevention strategies are needed to overcome the IL-derived material corrosion problems.

Original languageEnglish
Pages (from-to)4318-4323
Number of pages6
JournalCorrosion Science
Volume53
Issue number12
DOIs
StatePublished - 1 Dec 2011

Keywords

  • A. Copper
  • A. Nickel
  • A. Stainless steel
  • B. EIS
  • B. Polarization

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