Patent ID: 6039784
Filing Date: 2000-03-21
Classification: B22F,C22C,H01F

Abstract:
An improved metallurgical powder composition having a polymeric material associated therewith, comprising:(a) a major amount of a metal-based powder having a weight average particle size in the range of about 25-350 microns;(b) a minor amount of a polymeric material associated with the metal-based powder, the polymeric material comprising polyetherimides, polyphenylene ethers, polyethersulfones, polycarbonates, polyethylene glycols, polyvinyl acetates, or polyvinyl alcohols; and(c) a minor amount of a solid compaction lubricant comprising at least about 10 percent by weight of a solid, particulate polyether having the formula:H--[O(CH.sub.2).sub.q ].sub.n --OHwhere q is from about 1 to about 7, and n is selected such that the polyether has a weight average molecular weight between about 10,000 and about 4,000,000, wherein said polyether has a weight average particle size between about 25 and 150 microns.