Title:
FREE-STANDING NON-PLANAR POLYCRYSTALLINE SYNTHETIC DIAMOND COMPONENTS AND METHOD OF FABRICATION
Document Type and Number:
WIPO Patent Application WO/2013/178535
Kind Code:
A3
Abstract:
A free-standing non-planar polycrystalline CVD synthetic diamond component which comprises a nucleation face and a growth face, the nucleation face comprising smaller grains than the growth face, the nucleation face having a surface roughness Ra no more than 50 nm, wherein the free-standing non-planar polycrystalline CVD synthetic diamond component has a longest linear dimension when projected onto a plane of no less than 5 mm and is substantially crack free over at least a central region thereof, wherein the central region is at least 70% of a total area of the free-standing non-planar polycrystalline CVD synthetic diamond component, wherein the central region has no cracks which intersect both external major faces of the free-standing non-planar polycrystalline CVD synthetic diamond component and extend greater than 2 mm in length.
Inventors:
LIGGINS STEPHANIE (GB)
BRANDON JOHN ROBERT (GB)
PERKINS NEIL (GB)
WORT CHRISTOPHER JOHN HOWARD (GB)
INGLIS PAUL NICOLAS (GB)
MCCLYMONT MARK ROBIN (GB)
BRANDON JOHN ROBERT (GB)
PERKINS NEIL (GB)
WORT CHRISTOPHER JOHN HOWARD (GB)
INGLIS PAUL NICOLAS (GB)
MCCLYMONT MARK ROBIN (GB)
Application Number:
PCT/EP2013/060666
Publication Date:
February 27, 2014
Filing Date:
May 23, 2013
Export Citation:
Assignee:
ELEMENT SIX LTD (GB)
International Classes:
H04R7/12; H04R31/00; C23C16/27
Domestic Patent References:
| WO2005101900A1 | 2005-10-27 | |||
| WO2001073158A1 | 2001-10-04 |
Foreign References:
| US6659161B1 | 2003-12-09 | |||
| US6248400B1 | 2001-06-19 | |||
| EP2108714A1 | 2009-10-14 |
Other References:
WHITFIELD M D ET AL: "Nucleation and growth of diamond films on single crystal and polycrystalline tungsten substrates", DIAMOND AND RELATED MATERIALS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 9, no. 3-6, 1 April 2000 (2000-04-01), pages 262 - 268, XP004199760, ISSN: 0925-9635, DOI: 10.1016/S0925-9635(00)00236-3
Attorney, Agent or Firm:
ATKINSON, Ian, Anthony et al. (Group Intellectual Property3rd Floor, Building, Chiswick Park 566 Chiswick High Road London Greater London W4 5YE, GB)
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