EP 2981633 A2 20160210 - SUPERHARD CONSTRUCTIONS&METHODS OF MAKING SAME
Title (en)
SUPERHARD CONSTRUCTIONS&METHODS OF MAKING SAME
Title (de)
SUPERHARTE KONSTRUKTIONEN UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
CONSTRUCTIONS SUPERDURES ET SES PROCÉDÉS DE FABRICATION
Publication
Application
Priority
- GB 201305871 A 20130331
- EP 2014056463 W 20140331
Abstract (en)
[origin: GB2512500A] A superhard polycrystalline construction includes a body of polycrystalline superhard material comprising a superhard phase 32, and a non-superhard phase 33 dispersed in the superhard phase, the superhard phase 32 comprising a plurality of inter-bonded superhard grains. The non-superhard phase 33 comprises particles or grains 30 that do not chemically react with the superhard grains and form less than around 10 volume % of the body of polycrystalline superhard material. The super hard phase may be polycrystalline diamond and the particles may be oxides of alumina, yttria, silica or tantalum. A method of forming the body involves sintering the materials at a pressure of 5.5 GPa or greater.
IPC 8 full level
C22C 26/00 (2006.01); E21B 10/00 (2006.01); E21B 10/567 (2006.01)
CPC (source: EP GB US)
B24D 18/0009 (2013.01 - EP US); C22C 26/00 (2013.01 - EP GB US); E21B 10/46 (2013.01 - GB); E21B 10/56 (2013.01 - GB US); E21B 10/567 (2013.01 - EP GB US); B22F 2005/001 (2013.01 - EP US)
Citation (examination)
- JP S55144471 A 19801111 - KURATOMI TATSURO
- US 2009107291 A1 20090430 - LEVASHOV EVGENY ALEKSANDROVICH [RU], et al
- US 2012325049 A1 20121227 - LEVASHOV EVGENY ALEKSANDROVICH [RU], et al
- WO 2014033168 A1 20140306 - ELEMENT SIX ABRASIVES SA [LU]
- WO 2013186382 A1 20131219 - ELEMENT SIX ABRASIVES SA [LU]
- US 2008314646 A1 20081225 - LOCKWOOD GREGORY T [US], et al
- FEDERICO BELLIN ET AL: "The current state of PDC bit technology Part 2 of 3: Leaching a thin layer at the working surface of a PDC cutter to remove the cobalt dramatically reduces diamond degradation due to frictional heat", 1 October 2010 (2010-10-01), XP055108679, Retrieved from the Internet <URL:http://www.varelintl.com/content/includes/world_oil___october_2010.pdf> [retrieved on 20140318]
- FEDERICO BELLIN ET AL: "The current state of PDC bit technology; Part 1 of 3: Development and application of polycrystalline diamond compact bits have overcome complex challenges from the difficulty of reliably mounting PDC cutters in bit bodies to accelerated thermal wear", WORLD OIL, 1 September 2010 (2010-09-01), pages 41 - 46, XP055476940
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
GB 201405736 D0 20140514; GB 2512500 A 20141001; GB 2512500 B 20151007; CN 105209649 A 20151230; CN 110157967 A 20190823; EP 2981633 A2 20160210; GB 201305871 D0 20130515; JP 2016520504 A 20160714; JP 6316936 B2 20180425; US 2016251741 A1 20160901; US 2019017153 A1 20190117; US 2022411900 A1 20221229; WO 2014161818 A2 20141009; WO 2014161818 A3 20141224
DOCDB simple family (application)
GB 201405736 A 20140331; CN 201480028602 A 20140331; CN 201910369381 A 20140331; EP 14713509 A 20140331; EP 2014056463 W 20140331; GB 201305871 A 20130331; JP 2016505786 A 20140331; US 201414778409 A 20140331; US 201815881882 A 20180129; US 202217670573 A 20220214