Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements
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United States of America Patent
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Jan 7, 2014
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app pub date -
Nov 29, 2012
filing date -
Aug 24, 2005
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Abstract
A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including the working surface containing a non-metallic catalyst and the method of making such a compact is provided. This compact is particularly useful in high temperature operations, such as hard rock drilling because of the improved thermal stability at the working surface.
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