Tungsten-ruthenium alloy and powdermetallurgical method of making

Claim 1

AN ALLOY CONSISTING ESSENTIALLY OF 90% TUNGSTEN, ABOUT 6% NICKEL, ABOUT 2% MOLYBDENUM, ABOUT 1.5% IRON AND ABOUT 0.5% RUTHENIUM.

Claim 3

A METHOD OF FORMING A DUCTILE ALLOY OF TUNGSTEN CONTAINING RUTHENIUM COMPRISING THE STEPS OF: PREPARING A SATURATED SOLUTION OF RUTHENIUM TRICHLORIDE IN WARM WATER, ADDING TUNGSTEN POWDER APPROXIMATEL 1 MICRON DIAMETER WHILE STIRRING CONSTANTLY, DRYING AT 200-300* C., PLACING RESIDUE IN A HYDROGEN FURNACE AT 800*C. FOR ONE HOUR, ADDING NICKEL, IRON, AND MOLYBDENUM POWDERS 3-5 MICRONS DIAMETER IN SUCH PROPORTIONS THAT THE MIXTURE COMPRISES 180 PARTS W, 12 PARTS NI, 3 PARTS FE, 4 PARTS MO AND 1 PART RU, BALL-MILLING THIS MIXTURE UNTIL THE CONSTITUENTS ARE COMPLETELY BLENDED, MOLDING THIS POWDER IN A POWDER PRESS AT 20,000 P.S.I. AND FINALLY SINTERING THE COMPACTS IN A HYDROGEN ATMOSPHERE FOR ONE HOUR AT 1460*C.

Claim 4

A METHOD OF FORMING A DUCTILE ALLOY OF TUNGSTEN CONTAINING RUTHENIUM COMPRISING THE STEPS OF: PREPARING A SATURATED SOLUTION OF RUTHENIUM TRICHLORIDE IN WARM WATER, ADDING TUNGSTEN POWDER APPROXIMATEL 1 MICRON DIAMETER WHILE STIRRING CONSTANTLY, DRYING AT 200-300* C., PLACING RESIDUE IN A HYDROGEN FURNACE AT 800*C. FOR ONE HOUR, ADDING NICKEL, IRON, AND MOLYBDENUM POWDERS 3-5 MICRONS DIAMETER IN SUCH PROPORTIONS THAT THE MIXTURE COMPRISES 180 PARTS W, 12 PARTS NI, 3 PARTS FE, 4 PARTS MO AND 1 PART RU, BALL-MILLING THIS MIXTURE UNTIL THE CONSTITUENTS ARE COMPLETELY BLENDED, MOLDING THIS POWDER IN A POWDER PRESS AT 20,000 P.S.I. AND FINALLY SINTERING THE COMPACTS IN A HYDROGEN ATMOSPHERE FOR ONE HOUR AT 1460*C.