BRONZE ALLOY, PROCESS FOR PRODUCING THE SAME, AND SLIDING MEMBER COMPRISING BRONZE ALLOY

A bronze alloy having a metallographic structure which has a fine multilayer structure constituted of a layer of α-form copper and a layer of a copper-tin intermetallic compound and includes an eutectoid phase comprising, dispersedly precipitated therein, fine metal grains containing at least bismut...

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Bibliographische Detailangaben
Hauptverfasser:	FUNAKI KATSUYUKI, KOBAYASHI TAKESHI, AKASHI IWAO, OKANE TOSHIMITU, MARUYAMA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	A bronze alloy having a metallographic structure which has a fine multilayer structure constituted of a layer of α-form copper and a layer of a copper-tin intermetallic compound and includes an eutectoid phase comprising, dispersedly precipitated therein, fine metal grains containing at least bismuth (fine bismuth grains, etc.). The proportion of the lamellar eutectoid phase is 10-70% by area. From the standpoint of composition, the bronze alloy comprises copper and tin as main components and contains nickel, bismuth, and sulfur as additive elements, the nickel content being 0.5-5.0 mass %, the bismuth content being 0.5-7.0 mass %, and the sulfur content being 0.08-1.2 mass %. The tin content preferably is 8-15 mass %. The alloy may further contain lead in a proportion of 4 mass % or lower. The bronze alloy is used as a sliding surface of a sliding member (e.g., a hydraulic cylinder block).