ALLOYS FOR TRIBOLOGICAL APPLICATIONS

The invention relates to improved anti-friction alloys of YPbSn10Ca and YPbSn10Mg type characterized by a higher structure and much improved tribological properties as compared to the commercial YPbSn10 alloy. According to the invention, the alloys have the following chemical compositions: a. the YP...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CSAKI IOANA, SEMENESCU AUGUSTIN, STOICA ALINA-MARIA, AVRAM VASILE
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	ALLOYS BEARINGS BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY 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 HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to improved anti-friction alloys of YPbSn10Ca and YPbSn10Mg type characterized by a higher structure and much improved tribological properties as compared to the commercial YPbSn10 alloy. According to the invention, the alloys have the following chemical compositions: a. the YPbSn10Ca alloy consists of 0.2...0.5% Ca, 9.5...12% Sn, 14.5...6.5% Sb, 0,5...1.5% Cu and Pb for the remainder and b. the alloy YPbSn10Mg consists of 0.2...0.5% Mg, 9.5...12% Sn, 14.5...6, 5% Sb, 0.5...1.5% Cu and Pb for the remainder, both alloys having impurities of maximum 0.2%, for which values of the friction coefficient ranging between 0.0871...0.1126 were obtained, which are improved by 66% as compared to the friction coefficient of the commercial alloy YPbSn10.