Title:
ダイヤモンドの合成
Document Type and Number:
Japanese Patent JP5362992
Kind Code:
B2
Abstract:
In a method of synthesising diamond, a reaction mixture of a carbon source and a solvent/catalyst is pretreated at a high temperature and a high vacuum to remove substantially all of the atmospheric gases and other light volatile atoms. Then, at a reduced temperature, the removed gas is replaced with a desirable process gas. The pre-treated reaction mixture is then subjected to elevated temperature and pressure conditions in the diamond stable region of the carbon phase diagram in the presence of the process gas to produce the diamond. The process gas is selected to enhance the diamond growth rate, reduce solvent/catalyst inclusions, shift the morphology of the synthesised diamond (grown crystals) towards major crystal faces and blocker shape, reduce cracking and strain in the grown crystals, preferably at a desirably high growth rate, and permit the controlled and uniform doping of the diamond crystal with a hetero-atom such as P (phosphorus) or S (sulphur).
Inventors:
Stryaman, Corina, Bella, Helga
Chisik Hawe, Francis
Hansen, John, Olaf
Burns, Robert, Charles
Chisik Hawe, Francis
Hansen, John, Olaf
Burns, Robert, Charles
Application Number:
JP2007545000A
Publication Date:
December 11, 2013
Filing Date:
December 09, 2004
Export Citation:
Assignee:
Element Six (Production) (Proprietary) Limited
International Classes:
B01J3/06; C01B31/06; C30B29/04
Domestic Patent References:
| JP60210512A | ||||
| JP5200271A | ||||
| JP2002500550A | ||||
| JP59164606A | ||||
| JP56140017A | ||||
| JP2002018267A | ||||
| JP7053299A | ||||
| JP7082083A |
Other References:
中重治、伊藤秀章、筒井寿也,Effect of ambient pretreatment of graphite and solvent-catalyst on diamond formation,Journal of materials science,英国,Chapman and Hall Ltd.,Number 3,Volume 22,第1081頁~第1086頁
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yuichiro Asano
Katsunori Ando
Hajime Asamura
Yuichiro Asano
Katsunori Ando