METHOD OF PRODUCTION OF HARD-ALLOY COMPOSITE MATERIAL

METHOD OF PRODUCTION OF HARD-ALLOY COMPOSITE MATERIAL

FIELD: powder metallurgy; production of electric contact materials. SUBSTANCE: method includes mixing, molding and liquid-phase sintering where tungsten carbide, cobalt carbide and copper carbide powders are mixed; then, alcohol solution of orthophosphoric acid is introduced in mixture thus obtained...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: VASIN V.V, KONAKOV A.V, DOVGAL' O.V, CHIGRIN JU.L
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:FIELD: powder metallurgy; production of electric contact materials. SUBSTANCE: method includes mixing, molding and liquid-phase sintering where tungsten carbide, cobalt carbide and copper carbide powders are mixed; then, alcohol solution of orthophosphoric acid is introduced in mixture thus obtained at the following relationship of components, wt.%: Cu, 10-40; H3PO4, 0.6-6; WC-Co, the balance. Said mixture is plasticized in rubber solvent and sintering is performed in vacuum furnaces. EFFECT: enhanced electrical and thermal conductivity at retained high strength and wear resistant properties; facilitated procedure of production. 1 tbl