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Title:
PULSED ELECTRICAL FIELD ASSISTED OR SPARK PLASMA SINTERED POLYCRYSTALLINE ULTRA HARD MATERIAL AND THERMALLY STABLE ULTRA HARD MATERIAL CUTTING ELEMENTS AND COMPACTS AND METHODS OF FORMING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/006064
Kind Code:
A3
Abstract:
The present invention relates to ultra-hard cutting elements, and in particular cutting elements or compacts formed by a pulsed electrical field assisted HPHT sintering process or a spark plasma HPHT sintering process. In an embodiment, a method of forming a polycrystalline ultra-hard material includes providing a mixture of ultra-hard particles, placing the mixture of ultra-hard particles into an enclosure, placing the enclosure into a press cell assembly having a heater, applying a repeated high-energy pulse of direct current to the heater to heat the ultra-hard particles, and pressing the enclosure at sufficient pressure to form a polycrystalline ultra-hard material.

Inventors:
ZHAN, Guodong (28415 Lauren Cove, Spring, TX, 77386, US)
ZHANG, Youhe (John) (27307 W. Balsam Fir Cir, Spring, TX, 77386, US)
SHEN, Yuelin (2110 Brundage Drive, Apt. 4616Houston, TX, 77090, US)
Application Number:
US2009/049958
Publication Date:
January 14, 2010
Filing Date:
July 08, 2009
Export Citation:
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Assignee:
SMITH INTERNATIONAL, INC. (1310 Rankin Road, Houston, TX, 77073, US)
ZHAN, Guodong (28415 Lauren Cove, Spring, TX, 77386, US)
ZHANG, Youhe (John) (27307 W. Balsam Fir Cir, Spring, TX, 77386, US)
SHEN, Yuelin (2110 Brundage Drive, Apt. 4616Houston, TX, 77090, US)
International Classes:
C01B31/06; B01J3/06; B01J19/08; C30B29/04
Foreign References:
US6346689B12002-02-12
US20080014444A12008-01-17
US20080073127A12008-03-27
US4097274A1978-06-27
Other References:
See also references of EP 2300366A4
Attorney, Agent or Firm:
MARANTIDIS, Constantine (CHRISTIE, PARKER & HALE LLP.,P.O. Box 706, Pasadena CA, 91109-7068, US)
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