Title: Crystal growth
Application Number: 98813499 Application Date: 1998.12.10
Publication Number: 1284008 Publication Date: 2001.02.14
Approval Pub. Date: 2004.01.14 Granted Pub. Date: 2004.01.14
International Classifi-cation: B01J3/06
Applicant(s) Name: DE Beers Industrial Diamond Division (Proprietary) Address:
Inventor(s) Name: G.J. Davies;R.A. Chapman;A. Stewart
Attorney & Agent: yang jiuchang
Abstract:
    The invention provides a mass of crystals, particularly diamond crystals, having a size of less than 100 microns and in which mass the majority of the crystals are faceted single crystals. The invention further provides a method of producing such a mass of crystals which utilises crystal growth under elevated temperature and pressure conditions, the supersaturation driving force necessary for crystal growth being dependent, at least in part, on the difference in surface free energy between low Miller index surfaces and high Miller index surfaces of the crystals. Preferably, the method is carried out under conditions where the Wulff effect dominates.
Time: 10
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