Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
POLYCRYSTALLINE DIAMOND CONSTRUCTIONS
A polycrystalline diamond (PCD) construction has a first region of a first grade of PCD material; and a second region of a second grade of PCD material, the first region being at least partially peripherally surrounded by the second region, the first and second regions being bonded to each other by direct inter-growth of diamond grains to form an integral PCD structure and a substrate bonded to the first and/or second region(s) along an interface. The first grade of PCD differs from the second grade in one or more of diamond and metal network compositional ratio, metal elemental composition, or average diamond grain size, the first grade of PCD material having a larger average diamond grain size than the second grade of PCD material, and/or a smaller volume percentage of residual catalyst and/or binder in interstitial spaces between interbonded diamond grains than the PCD material of the second region.
POLYCRYSTALLINE DIAMOND CONSTRUCTIONS
A polycrystalline diamond (PCD) construction has a first region of a first grade of PCD material; and a second region of a second grade of PCD material, the first region being at least partially peripherally surrounded by the second region, the first and second regions being bonded to each other by direct inter-growth of diamond grains to form an integral PCD structure and a substrate bonded to the first and/or second region(s) along an interface. The first grade of PCD differs from the second grade in one or more of diamond and metal network compositional ratio, metal elemental composition, or average diamond grain size, the first grade of PCD material having a larger average diamond grain size than the second grade of PCD material, and/or a smaller volume percentage of residual catalyst and/or binder in interstitial spaces between interbonded diamond grains than the PCD material of the second region.
POLYCRYSTALLINE DIAMOND CONSTRUCTIONS
EARDLEY EDWIN STEWART (Autor:in)
01.04.2021
Patent
Elektronische Ressource
Englisch
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