CASE-HARDENING OF STAINLESS STEEL

The present invention relates to a surface hardening treatment method which hardens a surface of a stainless steel object by gas containing carbon and/or nitrogen for the carbon and/or nitrogen to pass through the surface to be dispersed inside the object. The method comprises: activating the surfac...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	KIM, SUNG SIG
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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 ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Beschreibung
Zusammenfassung:	The present invention relates to a surface hardening treatment method which hardens a surface of a stainless steel object by gas containing carbon and/or nitrogen for the carbon and/or nitrogen to pass through the surface to be dispersed inside the object. The method comprises: activating the surface of the object; and applying an uppermost layer to prevent the activated surface from being passivated again. The uppermost layer has metal catalyzed with respect to decomposition of gas. 본 발명은, 탄소 및/또는 질소를 포함하는 가스에 의한 스테인레스강 물품의 표면 경화 처리하여, 탄소 및/또는 질소 원자를 표면을 통과해 물품 안으로 확산시키는 표면 경화 처리 방법에 관한 것이다. 이러한 방법은, 상기 물품의 표면을 활성화시키는 것과, 활성화된 표면이 다시 부동태화되는 것을 방지하도록 최상층을 도포하는 것으로 포함한다. 상기 최상층은 상기 가스의 분해에 대한 촉매 작용을 하는 금속을 포함한다.