Patent ID: 8225886
Filing Date: 2012-07-24
Classification: B22F,C22C,E21B,Y10T

Abstract:
1. An article of manufacture comprising: at least one cemented carbide piece, wherein the total volume of cemented carbide pieces is at least 5% of a total volume of the article of manufacture; a joining phase binding the at least one cemented carbide piece into the article of manufacture, the joining phase comprising inorganic particles and a matrix material including at least one of a metal and a metallic alloy, wherein a melting temperature of the inorganic particles is higher than a melting temperature of the matrix material; and a non-cemented carbide piece bound into the article of manufacture by the joining phase, wherein the non-cemented carbide piece comprises a metallic piece comprising grains of at least one of tungsten, a tungsten alloy, tantalum, a tantalum alloy, molybdenum, a molybdenum alloy, niobium, and a niobium alloy, dispersed in a continuous matrix of one of a metal and a metal alloy.