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Polycrystalline diamond constructions having improved thermal stability
Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body.
Polycrystalline diamond constructions having improved thermal stability
Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body.
Polycrystalline diamond constructions having improved thermal stability
KESHAVAN MADAPUSI K (author) / GRIFFO ANTHONY (author) / SHEN YUELIN (author) / ZHANG YOUHE (author)
2018-11-13
Patent
Electronic Resource
English
IPC:
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
B24D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
,
Werkzeuge zum Schleifen, Polieren oder Schärfen
/
C04B
Kalk
,
LIME
Polycrystalline diamond constructions having optimized material composition
| European Patent Office | 2019
POLYCRYSTALLINE DIAMOND COMPACT WITH IMPROVED THERMAL STABILITY
| European Patent Office | 2016