SUPER-HARD CONSTRUCTIONS, METHODS FOR MAKING SAME AND METHOD FOR PROCESSING SAME

摘要

A construction comprising a sintered polycrystalline super-hard layer having mutually opposite reinforced boundaries, each of which is bonded to a respective reinforcement structure, in which the super-hard layer comprises polycrystalline diamond (PCD) material or polycrystalline cubic boron nitride (PCBN) material. The construction will be configured such that the equivalent circle diameter of each reinforced boundary is at least ten times the mean thickness of the super-hard layer between them. The reinforcement structures will be substantially free of material having a melting point of less than 2,000 degrees Celsius, at least adjacent the reinforced boundaries.

主权项

1. A construction comprising:
a sintered polycrystalline super-hard layer comprising mutually opposite reinforced boundaries, each of which is bonded to a respective reinforcement structure; wherein the super-hard layer comprises polycrystalline diamond (PCD) material or polycrystalline cubic boron nitride (PCBN) material; the construction configured such that an equivalent circle diameter of each reinforced boundary is at least ten times a mean thickness of the super-hard layer between them; and the reinforcement structures being substantially free of material with a melting point of less than 2,000 degrees Celsius, at least adjacent the reinforced boundaries; and at least one of the reinforcement structures comprises any of molybdenum (Mo), niobium (Nb), tantalum (Ta), tungsten (W) and rhenium (Re) in any of elemental metallic form, alloy form, intermetallic material or a chemical compound.