Method of treating metal powders

Claim 1

IN A METHOD OF MAKING A RELATIVELY STRONGLY COHERENT TUNGSTEN-MOLYBDENUM ALLOY SLUG FROM COMMERCIAL TUNGSTEN POWDER HAVING UNPREDICTABLE CHARACTERISTICS IN RESPECT OF PARTICLE SIZE DISTRIBUTION AND SIZE DISTRIBUTION PEAK AND HAVING RELATIVELY SMALL AND RELATIVELY LARGE PARTICLES, AND COMMERCIAL MOLYBDENUM POWDER HAVING A PREDICTABLE PARTICLE SIZE DISTRIBUTION OF FROM SLIGHTLY ABOVE ZERO TO 10 MICRONS IN DIAMETER AND A SIZE DISTRIBUTION PEAK OF FROM ONE-HALF TO FIVE MICRONS IN DIAMETER, SAID METHOD COMPRISING THE STEPS OF HEATING SAID COMMERCIAL TUNGSTEN POWDER AT A TEMPERATURE FROM ABOUT 1660* TO ABOUT 1750* C. FOR ONE-HALF HOUR TO CAUSE SAID RELATIVELY SMALL PARTICLES OF SAID TUNGSTEN POWDER TO BECOME SINTERED TOGETHER IN A RELATIVELY STRONGLY COHERENT BOND AND TO CAUSE SAID RELATIVELY LARGE TUNGSTEN PARTICLES TO BECONE SINTERED IN A RELATIVELY WEAKLY COHERENT BOND, AND SUBSEQUENTLY MECHANICALLY WORKING SAID SINTERED TUNGSTEN POWDER FOR ABOUT THREE HOURS TO RELEASE SAID LARGER PARTICLES ONLY FROM SAID RELATIVELY WEAKLY COHERENT BOND, FOR PROVIDING A TREATED TUNGSTEN POWDER HAVING SAID DISTRIBUTION PEAK, WHEREBY SAID TRIBUTION AND SIZE DISTRIBUTION PEAK, WHEREBY SAID TREATED TUNGSTEN POWDER AND SAID COMMERCIAL MOLYBDENUM POWDER ARE ADAPTED TO BE HOMOGENEOUSLY MIXED AND SINTERED TO PROVIDE SAID STRONGLY COHERENT SLUG.