Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al

Ning Tang, Yunping Li, Yuichiro Koizumi, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Effects of nitriding treatment on the corrosion behaviour of Co-29Cr-6Mo alloy in liquid Al were investigated. Because of the high solubility and high diffusion coefficient of nitrogen in Co, Cr2N and π phases formed from sample surface into alloy matrix during nitriding at 1273K; however, the nitride layer was not continuously formed on sample surface even in a prolonged process. The Cr2N showed obviously higher resistance to liquid Al compared to alloy matrix, but owing to its discontinuous distribution, the formed Cr2N did not obviously improve the corrosion resistance of the alloy to liquid Al.

Original languageEnglish
Pages (from-to)244-250
Number of pages7
JournalCorrosion Science
Volume78
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • A. Aluminium
  • A. Cobalt
  • B. SEM
  • B. TEM
  • C. Interfaces

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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