Stainless steel containing copper antibacterial surface and its manufacturing technology

The invented stainless steel includes the basic material of stainless steel and the epsilon-Cu cementation layer on the surface of the basis material. The content of copper in the cementation layer is 1.5-30 wt%. The manufacturing procedure includes following steps. The basis material of stainless s...

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Bibliographische Detailangaben
Hauptverfasser:	HONGWEI NI, BOFAN XU, SHISEN WANG
Format:	Patent
Sprache:	eng
Schlagworte:	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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The invented stainless steel includes the basic material of stainless steel and the epsilon-Cu cementation layer on the surface of the basis material. The content of copper in the cementation layer is 1.5-30 wt%. The manufacturing procedure includes following steps. The basis material of stainless steel is put into the cementation agent utilized in analysis and containing CuO, CuCl and NH4Cl (or urea). Heating to 800-1000 deg.C and keeping the temperature for two hours. Aging treatment of solid-liquor carries out at 400-950 deg.C for 1-8 hours. The invention provides the capability of mold resistance for the products made from stainless steel directly. Meanwhile, it prevents the unfavourable effect caused by adding Cu to entire product.