Unique PDC microstructure and the method of making it
AssigneesCNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
InventorsKai Zhang, Chris Cheng, Xiao Feng, Qi Peng, Xiongwen Yang
Life of this patent
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Abstract
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with a catalytic materials from the substrate.
Claims14
A method of making a superabrasive compact, comprising:
- mixing a non-catalytic binder with a plurality of diamond particles, wherein the non-catalytic binder is at least one of Titanium, MqCO3, CaCO3, Boron, Tantalum, Cr2AIC, or Niobium;
- subjecting the non-catalytic binder and the plurality of diamond particles to first conditions of temperature and pressure suitable for producing an agglomerate granule;
- mixing the agglomerate granule with a third plurality diamond particles;
- and
- positioning the resulting mixture proximate to a substrate, wherein the substrate has hard metal carbides and a binder having carbon at least partially dissolved therein;
- subjecting the resulting mixture and the hard metal carbides to second conditions of temperature and pressure suitable to produce the superabrasive compact.
A method of making a superabrasive compact, comprising:
- mixing a first plurality of diamond particles with a second plurality of diamond particles;
- subjecting the mixture of the plurality of diamond particles to first conditions of temperature and pressure suitable for producing an agglomerate granule;
- mixing the agglomerate granule with a third plurality diamond particles;
- positioning the resulting mixture proximate to a substrate, wherein the substrate is a pre-sintered cemented carbide substrate;
- and
- subjecting the resulting mixture and the substrate to second conditions of temperature and pressure suitable to produce the superabrasive compact.
Dependencies are inferred from the claim text.