Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer

Masahiro Nagae, Naoko Ise, Hideyuki Kuwahara, Jun Takada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

For Mo-Cr nitride layer prepared by NH3 gas nitriding of pure Mo subjected to Cr-diffusion treatment, the oxidation behavior in air and corrosion behavior in boiling sulfuric acid were investigated. The surface nitride layer consisted of γ-Mo2N type solid solution of which Mo-Cr ratio was almost 1:1 on the surface. Although γ-Mo2N layer obtained by nitriding pure Mo was oxidized at temperatures above 773 K, Mo-Cr nitride layer exhibited superior oxidation resistance up to 1073 K. The corrosion resistance of Mo-Cr nitride layer in boiling sulfuric acid was as excellent as that of γ-Mo2N layer.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume56
Issue number8
DOIs
Publication statusPublished - Aug 1 2009

Keywords

  • Ammonia gas nitriding
  • Chromium diffusion
  • Corrosion resistance
  • Molybdenum-chromium nitride
  • Oxidation resistance

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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