Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer

Masahiro Nagae; Naoko Ise; Hideyuki Kuwahara; Jun Takada

doi:10.2497/jjspm.56.529

Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer

Masahiro Nagae
, Naoko Ise
, Hideyuki Kuwahara
, Jun Takada

研究成果 › 査読

1 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	529-533
ページ数	5
ジャーナル	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
巻	56
号	8
DOI	https://doi.org/10.2497/jjspm.56.529
出版ステータス	Published - 8月 2009
外部発表	はい

ASJC Scopus subject areas

機械工学
産業および生産工学
金属および合金
材料化学

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10.2497/jjspm.56.529

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title = "Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer",

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.",

keywords = "Ammonia gas nitriding, Chromium diffusion, Corrosion resistance, Molybdenum-chromium nitride, Oxidation resistance",

author = "Masahiro Nagae and Naoko Ise and Hideyuki Kuwahara and Jun Takada",

year = "2009",

month = aug,

doi = "10.2497/jjspm.56.529",

language = "English",

volume = "56",

pages = "529--533",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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TY - JOUR

T1 - Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer

AU - Nagae, Masahiro

AU - Ise, Naoko

AU - Kuwahara, Hideyuki

AU - Takada, Jun

PY - 2009/8

Y1 - 2009/8

N2 - 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.

AB - 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.

KW - Ammonia gas nitriding

KW - Chromium diffusion

KW - Corrosion resistance

KW - Molybdenum-chromium nitride

KW - Oxidation resistance

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DO - 10.2497/jjspm.56.529

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JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

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IS - 8

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Oxidation resistance and corrosion resistance of molybdenum-chromium nitride layer

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