DIAMOND COMPACT

摘要

A method of making a composite diamond abrasive compact which comprises a polycrystalline mass of diamond particles present in an amount of at least 80 percent by volume of the compact, and a second phase containing a diamond catalyst/solvent and a noble metal is provided. The method includes the steps of providing a cemented carbide substrate (20), providing a layer of diamond particles on a surface (26) of the substrate, providing a source of diamond catalyst/solvent and noble metal, for example as a layer between the diamond particles and the surface (26), and causing the diamond catalyst/solvent and noble metal to infiltrate the diamond particles under diamond synthesis conditions producing a diamond compact.