WEAR RESISTANT FRICTIONALLY CONTACTING SURFACES

An improved mechanical system comprising a first part presenting a first metallic surface, a second part presenting a metallic surface of the same or a different metal and capable of being in sliding contact with the first surface, and means for inducing and maintaining the two surfaces in sliding c...

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Bibliographische Detailangaben
1. Verfasser:	FARLEY C,US
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CYLINDERS 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 MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS PISTONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SEALINGS SHAFTS SOLDERING OR UNSOLDERING THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	An improved mechanical system comprising a first part presenting a first metallic surface, a second part presenting a metallic surface of the same or a different metal and capable of being in sliding contact with the first surface, and means for inducing and maintaining the two surfaces in sliding contact with each other, for example, in liquid pumps of the gear type wherein there is sliding and rolling between the teeth of adjacent meshing and unmeshing gears, the improvement consisting of employing as each surface a metallic surface comprising an alloy containing at least 60 atom percent of at least two heavy metal transition elements, the ratio of the atomic radii of the largest to the smallest transition elements being 1.05-1.68, and consisting of 10-100 volume percent of a hard phase and 0-90 volume percent of a matrix phase which is softer than the hard phase, said hard phase containing a major fraction of Laves phase in such amount as to provide at least 10 volume percent thereof in the alloy.