Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David R. Hall0
Ronald B. Crockett0
Date of Patent
May 20, 2014
0Patent Application Number
130742760
Date Filed
March 29, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In one aspect of the invention, a method of forming polycrystalline diamond comprises providing a can assembly comprising a preform of diamond powder with a first catalyst, the preform being adjacent a solid substrate with a second catalyst. The pressure and/or temperature on the can assembly increases until the first catalyst and carbon from the diamond powder begin to form a melting composition within the preform. The pressure and temperature may be held substantially constant on the can assembly until the melting composition has catalyzed crystalline growth in at least a portion of the preform. The pressure and/or temperature are then increased on the assembly until the second catalyst within the substrate is released into the preform.
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