WEAR RESISTANT TWO-PHASE BINDERLESS TUNGSTEN CARBIDE AND METHOD OF MAKING SAME

摘要

An ultrafine grain two-phase binderless tungsten carbide material is disclosed. The material contains, in weight percent, ditungsten carbide in the range of about 1 to about 10 percent, up to about 1.0 percent vanadium carbide and/or chromium carbide, up to about 0.2 percent cobalt, and the balance tungsten carbide, wherein the wear resistant material has a hardness of at least about 2,900 kg/mm2 and a microstructure in which the tungsten carbide average grain size is no greater than about 0.3 microns. The material has a surprisingly good combination of wear resistance and hardness. Methods of making the material and articles made from the material are also disclosed.