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Optimizing the nickel content in weathering steels to enhance their corrosion resistance in acidic atmospheres

  • Xuequn Cheng*
  • , Zhu Jin
  • , Ming Liu
  • , Xiaogang Li
  • *Corresponding author for this work
  • University of Science and Technology Beijing
  • CAS - Ningbo Institute of Material Technology and Engineering

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of nickel on the corrosion resistance of weathering steels in acidic atmospheres was investigated by exposure test and electrochemical technique. The results showed that 3.5 wt.% is the optimum nickel content in weathering steels to enhance their atmospheric corrosion resistance. The reason is discussed as follows: once the nickel content exceeds 3.5 wt.%, the nickel content in the rust increases slightly even with a considerable increase of that in weathering steels; the mass ratio of α-FeOOH to γ-FeOOH in the rust almost remains stable; additional nickel has no significant effect on the corrosion current density of the steels.

Original languageEnglish
Pages (from-to)135-142
Number of pages8
JournalCorrosion Science
Volume115
DOIs
StatePublished - 1 Feb 2017
Externally publishedYes

Keywords

  • A. Weathering steel
  • B. Atmosphere corrosion
  • C. Nickel
  • D. Rust

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