METAL MATERIAL HAVING HIGH CORROSION RESISTANCE AND HIGH CONDUCTIVITY AND METHOD FOR MANUFACTURING THE SAME

To provide a metal material having high optimal corrosion resistance and conductivity as a fuel cell stack member requiring high corrosion resistance and a metal material (a base material) requiring low electrical resistance and high conductivity.SOLUTION: After forming a tungsten carbide layer or a...

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Bibliographische Detailangaben
Hauptverfasser:	KAWASAKA KENJI, SHIN YOSHIO, FUKUTOME NAOTOSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS 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 ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	To provide a metal material having high optimal corrosion resistance and conductivity as a fuel cell stack member requiring high corrosion resistance and a metal material (a base material) requiring low electrical resistance and high conductivity.SOLUTION: After forming a tungsten carbide layer or a nickel carbide layer on the surface of a base material consisting of a metal member by thermal spray or applying tungsten carbide or nickel carbide to the surface of the base material, the tungsten carbide or the nickel carbide is buried in the surface of the base material by rolling or pressing.SELECTED DRAWING: Figure 3 【課題】高い耐食性を要求される燃料電池スタック用部材や電気抵抗が低く高い通電性を要求される金属材（基材）として最適な高耐食性、高通電性を有する金属材料の提供。【解決手段】金属製部材からなる基材表面に、溶射によりタングステンカーバイド層又はニッケルカーバイド層を形成するか、又は、前記基材表面にタングステンカーバイドあるいはニッケルカーバイドを塗布した後、当該タングステンカーバイドあるいはニッケルカーバイドを圧延又はプレスにより加圧して基材表面に埋め込む。【選択図】図３