NITRIDING TREATMENT METHOD AND NITRIDING TREATMENT APPARATUS

To provide a nitriding treatment method for forming an excellent wear resistant compound layer of an iron nitride compound layer of ε phase (Fe2-3N) and γ' phase (Fe4N) in a short time treatment with a high heat efficiency, a reduced use amount of nitrogen gas, and a low environmental load on a...

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Bibliographische Detailangaben
Hauptverfasser:	KANEMOTO MASARU, NAKAMURA KEIGO, SHINAGAWA KAZUYA, HATO HISAMITSU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	To provide a nitriding treatment method for forming an excellent wear resistant compound layer of an iron nitride compound layer of ε phase (Fe2-3N) and γ' phase (Fe4N) in a short time treatment with a high heat efficiency, a reduced use amount of nitrogen gas, and a low environmental load on a steel material forming a slide member.SOLUTION: A nitriding treatment method uses a high frequency induction heating or an electric heating to heat a slide member consisting of a steel material at 600°C - 700°C for a time of 1 min - 25 min under a nitrogen gas atmosphere to form an iron nitride compound layer of ε phase(Fe2-3N) and γ'phase(Fe4N) containing nitrogen of more than 4.5% on a surface layer part of the slide member.SELECTED DRAWING: Figure 1 【課題】摺動部材を形成する鉄鋼材に、摩損耐久性に優れるε相（Ｆｅ２〜３Ｎ）、γ'相（Ｆｅ４Ｎ）の鉄窒化物の化合物層を、短時間処理で、高い熱効率で、窒化ガスの使用量を低減し、低環境負荷で、形成する窒化処理方法を提供する。【解決手段】窒化処理方法は、高周波誘導加熱又は通電加熱を使用し、温度が６００℃〜７００℃で、時間が１分〜２５分で、窒化ガスの雰囲気下で、鉄鋼材からなる摺動部材を加熱し、摺動部材の表層部に、窒素含有量が４．５％を超えるε相（Ｆｅ２〜３Ｎ）、γ'相（Ｆｅ４Ｎ）の鉄窒化物の化合物層を形成することを特徴とする。【選択図】図１