MEMBER FOR MOLTEN METAL BATH, PROVIDED WITH COMPOSITE SPRAYED COATING HAVING EXCELLENT CORROSION RESISTANCE AND PEELING RESISTANCE AGAINST MOLTEN METAL

An object of the present invention is to provide a member for a molten metal bath provided with a composite sprayed coating having excellent corrosion resistance and peeling resistance against a molten metal. A cermet sprayed coating lower layer comprising 5-60% by weight of a metal boride and 5-30%...

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Bibliographische Detailangaben
Hauptverfasser:	HIROSHIGE, MUNETOSHI, SATO, TAKAO, TARUMI, KIYOHIRO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING 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 ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An object of the present invention is to provide a member for a molten metal bath provided with a composite sprayed coating having excellent corrosion resistance and peeling resistance against a molten metal. A cermet sprayed coating lower layer comprising 5-60% by weight of a metal boride and 5-30% by weight of at least one member selected from the group consisting of Co, Cr, Mo, and W with the balance comprising a metal carbide and unavoidable impurities is formed on a surface of a member for a molten metal bath such as a roll in a bath, and an oxide ceramic sprayed coating surface layer comprising combined various oxides is formed on the cermet coating, and then the obtained composite coating is subjected to sealing treatment by means of an inorganic sealing agent.