Brazed thermally-stable polycrystalline diamond compact workpieces and their fabrication. EPO Patent 0329954-A2

0329954-A2 is referenced by 84 patents and cites 5 patents.

Disclosed is a brazed implement comprising a thermally-stable polycrystalline diamond compact, e.g. a compact of self-bonded diamond particles having a network of inter-connected empty pores dispersed throughout the compact, bonded to another of said compact or bonded to a cemented carbide support by a brazing filler metal disposed therebetween. The brazing metal comprises an alloy having a liquidus above about 700 DEG C and containing an effective amount of chromium. Translational shear strengths exceed about 50 kpsi even upon furnace cycling of the brazed implements and often exceed 90 kpsi. The method for fabricating the brazed implement also is disclosed.

Title
Brazed thermally-stable polycrystalline diamond compact workpieces and their fabrication.
Application Number
EP19890101104 19890123
Publication Number
0329954 (A2)
Application Date
January 23, 1989
Publication Date
August 30, 1989
Inventor
Smith Gary Wayne
Flood Gary Martin
Gigl Paul Donald
Slutz David Earl
Assignee
Gen Electric
US
IPC
C04B 37/00
B23K 35/32
B23K 35/30
B23K 31/04
B23K 31/02
B23B 27/18
C04B 37/02
C04B 37/00
B23K 35/30
B23K 35/24
B23K 31/02
B23K 01/19
C04B 37/02
C04B 37/00
B23K 35/32
B23K 35/30
B23K 31/02
B23K 01/19
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Citations: 84 (view full list)

  1. Terry R Matthias, Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength. Grant Prideco, Jeffery E Daly, August 5, 2003: US06601662 (279 worldwide citation)
  2. Nigel Dennis Griffin, Peter Raymond Hughes: High volume density polycrystalline diamond with working surfaces depleted of catalyzing material. Camco International, Jeffery E Daly, April 8, 2003: US06544308 (261 worldwide citation)
  3. Nigel Dennis Griffin, Peter Raymond Hughes: High volume density polycrystalline diamond with working surfaces depleted of catalyzing material. ReedHycalog, Jeffery E Daly, March 1, 2005: US06861137 (218 worldwide citation)
  4. Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond partially depleted of catalyzing material. Jeffery E Daly, July 8, 2003: US06589640 (216 worldwide citation)
  5. Nigel Dennis Griffin, Peter Raymond Hughes: High volume density polycrystalline diamond with working surfaces depleted of catalyzing material. Camco International, Jeffery E Daly, May 13, 2003: US06562462 (214 worldwide citation)
  6. Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond partially depleted of catalyzing material. Camco International, Jeffery E Daly, July 15, 2003: US06592985 (206 worldwide citation)
  7. Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond partially depleted of catalyzing material. Jeffrey E Daly, July 1, 2003: US06585064 (187 worldwide citation)
  8. Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond partially depleted of catalyzing material. ReedHyoalog, Jeffery E Daly, June 15, 2004: US06749033 (181 worldwide citation)
  9. Nigel Dennis Griffin, Peter Raymond Hughes: Polycrystalline diamond partially depleted of catalyzing material. ReedHycalog, Jeffery E Daly, May 25, 2004: US06739214 (153 worldwide citation)
  10. Nigel Dennis Griffin, Peter Raymond Hughes: Method of making polycrystalline diamond with working surfaces depleted of catalyzing material. Reedhycalog, Jeffery E Daly, September 28, 2004: US06797326 (149 worldwide citation)

References: 5

  1. Lowder James T, Tausch Edwin M: Method of manufacturing diamond abrasive tools. Abrasive Technology, Cennamo, Kremblas, Foster, July 15, 1975: US3894673 (111 worldwide citation)
  2. Pipkin Noel John: Thermally stable diamond compacts. De Beers Ind Diamond, February 19, 1986: GB2163144-A (13 worldwide citation)
  3. Howard Mizuhara: Palladium alloy for joining ceramics and method of use. GTE Products Corporation, James Theodosopoulos, January 12, 1988: US04719081 (11 worldwide citation)
  4. Schroeder Robert Ralph: Brazed composite compact implements.. Gen Electric, March 11, 1987: EP0213300-A2 (4 worldwide citation)
  5. Smith Murray Sawyer Jr, Hilboldt Mark Stewart, Mathur Pracheeshwar Swaroop: Nickel-palladium-chromium-boron brazing alloy.. Gen Electric, April 20, 1983: EP0076991-A1 (2 worldwide citation)