Polycrystalline diamond abrasive elements

Details Polycrystalline diamond abrasive elements Polycrystalline diamond abrasive elements

E - Fixed Constructions

21

B

E21B 10/56 (2006.01) C22C 26/00 (2006.01)

Patent

CA 2549061

A polycrystalline diamond abrasive element, particularly a cutting element, comprises a layer of polycrystalline diamond having a working surface and bonded to a substrate, particularly a cemented carbide substrate, along an interface. The polycrystalline diamond abrasive element is characterised by using a binder phase that is homogeneously distributed through the polycrystalline diamond layer and that is of a fine scale. The polycrystalline diamond also has a region adjacent the working surface lean in catalysing material and a region rich in catalysing material.

Cet élément abrasif en diamant polycristallin, notamment un élément coupant, comprend une couche en diamant polycristallin qui a une surface d'usinage et est liée à un substrat, notamment un substrat en carbure cimenté, le long d'une interface. L'élément abrasif en diamant polycristallin se caractérise par l'utilisation d'une phase de liaison à fine échelle distribuée de manière homogène dans la couche en diamant polycristallin. Le diamant polycristallin comprend également une zone pauvre en matériau catalyseur adjacente à la zone d'usinage et une zone riche en matériau catalyseur.

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