Thermally stable ultra-hard material compact constructions

摘要

A compact construct 64 made of an ultra hard material 66 which is substantially free of catalyst material to increase the thermally stability in a region adjacent a working surface and formed from consolidated materials that are thermally stable at temperatures in excess of 750 {C, a metallic substrate 70, and an intermediate material layer 72 used as a barrier to stop migration of materials from the substrate 70 to the ultra hard material body 66. The construct 64 has the advantage of being substantially free of catalyst material at one location, and therefore more thermally stable, but can be brazed to a body at an alternative location on the substrate 70. The thermally stable ultra hard material 66, the intermediate material layer 72, and the substrate 70 are joined together by a high pressure/high temperature process to form a single construct. Additionally disclosed is a method of manufacture.