Cutting elements having non-planar cutting faces with selectively leached regions, earth-boring tools including such cutting elements, and related methods
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United States of America Patent
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Dec 19, 2017
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app pub date -
Mar 17, 2014
filing date -
Mar 17, 2014
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Abstract
A cutting element may include a substrate and a volume of polycrystalline diamond material affixed to the substrate at an interface. The volume of polycrystalline diamond may include a front cutting face with at least one substantially planar portion and at least one recess. The at least one recess may extend from a plane defined by the at least one substantially planar portion a first depth into the volume of polycrystalline diamond material in an axial direction parallel to a central axis of the cutting element. The volume of polycrystalline diamond material may comprise a region including a catalyst material. At least one region substantially free of the catalyst material may extend from the at least one substantially planar portion of the front cutting face a second depth into the volume of polycrystalline diamond in the axial direction. Methods of forming cutting elements.
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