发明名称 |
SINTERING PROCESS FOR DIAMOND AND DIAMOND GROWTH |
摘要 |
A method of making a bonded, coherent material comprising a mass of diamond crystals in a matrix, which optionally contains another phase. The method includes the steps of providing a source of diamond crystals, providing a plurality of diamond centers defined by diamond crystals, producing a reaction mass by bringing the source and growth centers into contact with a solvent/catalyst, subjecting the reaction mass to conditions of elevated temperature and pressure suitable for crystal growth in the reaction zone of a high temperature/high pressure apparatus to produce the material, and removing the material from the reaction zone. The method is characterized by providing the necessary supersaturation of carbon in the solvent/catalyst, at least in part and preferably predominantly, by a selection of particle size difference between the source crystal and the growth centers. The mass of diamond crystals in the matrix of the bonded, coherent material of the invention has a high concentration of twinned diamonds. |
申请公布号 |
EP0975423(A1) |
申请公布日期 |
2000.02.02 |
申请号 |
EP19980917386 |
申请日期 |
1998.04.16 |
申请人 |
DE BEERS INDUSTRIAL DIAMOND DIVISION (PTY) LIMITED |
发明人 |
CAMPBELL, JAMES, WILBERT;ADIA, MOOSA MAHOMED;DAVIES, GEOFFREY, JOHN;CHAPMAN, RAYMOND, ALBERT;TANK, KLAUS;STEWART, AULETTE;HEDGES, LESLEY, KAY |
分类号 |
C04B35/52;B01J;B01J3/06;C01B31/06;C22C26/00;C30B |
主分类号 |
C04B35/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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