Global Patent Index - EP 2981633 A2

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

EP 2981633 A2 20160210 (EN)

Application

EP 14713509 A 20140331

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 (search report)

See references of WO 2014161818A3

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; 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