Patent ID: 9562431
Date: 2017-02-07
CPC Classifications: B22F,C22C,E21B,E21C

Claim:
1. A tip for a pick tool, comprising a polycrystalline diamond (PCD) structure joined to a substrate body, the PCD structure having a strike surface including an apex opposite a boundary with the substrate body, the thickness of the PCD structure disposed between the apex and the boundary with the substrate body being at least 3 mm; in which the PCD structure consists of diamond and filler material, the filler material comprising catalyst material for diamond, the content of the filler material being more than 5 weight percent of the PCD structure and the content of the catalyst material being substantially uniform throughout the PCD structure; including in an outer volume of the PCD structure proximate at least an area of the strike surface including the apex, the outer volume containing filler material between diamond grains, the content of the filler material being more than 5 weight percent of the PCD structure in the outer volume.