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METHODS OF FORMING POLYCRYSTALLINE DIAMOND ELEMENTS, POLYCRYSTALLINE DIAMOND ELEMENTS, AND EARTH-BORING TOOLS CARRYING SUCH POLYCRYSTALLINE DIAMOND ELEMENTS
METHODS OF FORMING POLYCRYSTALLINE DIAMOND ELEMENTS, POLYCRYSTALLINE DIAMOND ELEMENTS, AND EARTH-BORING TOOLS CARRYING SUCH POLYCRYSTALLINE DIAMOND ELEMENTS
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机译:形成多晶金刚石元素,多晶金刚石元素和携带这种多晶金刚石元素的土钻工具的方法
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摘要
Methods of forming polycrystalline diamond elements include forming a polycrystalline diamond element. A Group VIII metal or alloy catalyst is employed to form the polycrystalline diamond compact table at a pressure of at least about 6.5 GPa or greater. The catalyst is then removed from at least a portion of the table to a depth from a working surface thereof, and may be removed from the entirety of the table. Polycrystalline diamond elements include such polycrystalline diamond compact tables. Earth-boring tools include such polycrystalline diamond elements carried thereon and employed as cutting elements.
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