Synthesis of diamond-boron carbide (b4c) ceramic materials
AssigneeDiamond Innovations, Inc.
InventorEmil Stoyanov
Life of this patent
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Abstract
Provided is a novel super-hard reinforced boron carbide (B4C)-diamond composite material including diamond particles present in a weight of from about 91 weight percent (wt. %) to about 95 wt. % based on a total weight of the composite and B4C particles present in a weight of from about 5 wt. % to about 9 wt. % based on a total weight of the composite. The super-hard reinforced B4C-diamond composite is essentially graphite-free and pore-free. Further provided are associated methods for preparing such reinforced B4C-diamond composite materials, and cutting tools incorporating the reinforced B4C-diamond composite materials.
Claims19
A super-hard boron carbide (B4C)-diamond composite, comprising:
- diamond particles present in a weight of from about 91 weight percent (wt. %) to about 95 wt. % based on a total weight of the composite;
- and
- B4C particles present in a weight of from about 5 wt. % to about 9 wt. % based on a total weight of the composite,
- wherein the B4C-diamond composite is graphite-free and pore-free.
A method of forming a super-hard boron carbide (B4C)-diamond composite, comprising:
- preparing a batch of powdered materials comprising a diamond powder in a weight of from about 91 weight percent (wt. %) to about 95 wt. % based on a total weight of the batch of powdered materials and an amorphous boron powder in a weight of from about 5 wt. % to about 9 wt. % based on a total weight of the batch of powdered materials;
- mixing the batch of powdered materials to form a powder blend;
- drying the powder blend;
- loading the powder blend into one or more refractory metal containers;
- and
- sintering the powder blend at high pressure high temperature (HPHT) conditions to form the super-hard B4C-diamond composite,
- wherein the B4C-diamond composite is graphite-free and pore-free.
Dependencies are inferred from the claim text.