公开(公告)号：US06497853B1

公开(公告)日：2002-12-24

申请号：US09403017

申请日：1999-11-23

申请人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges

发明人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges

IPC分类号： C01B3106

CPC分类号： B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068

摘要： Diamond crystals may be grown by providing a source of diamond crystals, providing a plurality of growth centers defined by diamond crystals, mixing the source and growth center diamond crystals with a solvent/catalyst in particulate form to form a reaction mass, subjecting the reaction mass to conditions of elevated temperature and pressure suitable for crystal growth, and recovering the diamond crystals. The necessary supersaturation of carbon is achieved in the solvent/catalyst, at least in part, and preferably predominantly, by a selection of the particle size difference between the source crystal and the growth centers. The mass of diamond crystals produced by this method has a high concentration of twinned diamonds.

摘要翻译： 金刚石晶体可以通过提供金刚石晶体源生长，提供由金刚石晶体限定的多个生长中心，将源和生长中心金刚石晶体与颗粒形式的溶剂/催化剂混合以形成反应物质，使反应物质 适用于晶体生长的升高的温度和压力的条件，以及回收金刚石晶体。 在溶剂/催化剂中，至少部分地，优选主要通过选择源晶体和生长中心之间的粒径差异来实现碳的必要过饱和。 通过该方法生产的金刚石晶体的质量具有高浓度的双晶钻石。

公开(公告)号：US06835365B1

公开(公告)日：2004-12-28

申请号：US09555518

申请日：2000-08-23

申请人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges

发明人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges

IPC分类号： C01B3106

CPC分类号： B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/068

摘要： 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 utilizes 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.

摘要翻译： 本发明提供了一种晶体，特别是具有小于100微米尺寸的金刚石晶体，并且其中大部分晶体是刻面单晶。 本发明进一步提供了一种制造这种在升高的温度和压力条件下使用晶体生长的晶体块的方法，晶体生长所需的过饱和驱动力至少部分地取决于低米勒之间的表面自由能的差异 指数表面和晶体的高米勒指数表面。 优选地，该方法在Wulff效应占优势的条件下进行。

公开(公告)号：US06656444B1

公开(公告)日：2003-12-02

申请号：US09698522

申请日：2000-10-27

申请人： John M. Pinneo

发明人： John M. Pinneo

IPC分类号： C01B3106

CPC分类号： C23C16/272

摘要： A method for making diamond material comprises providing a deposition chamber; placing a substrate in said deposition chamber; sealing and evacuating said deposition chamber; admitting to said deposition chamber gases suitable for diamond deposition; heating said substrate to a diamond deposition temperature; igniting and maintaining a plasma adjacent to a growth surface of said substrate such that said plasma extends no further than 1 mm from said growth surface of said substrate; and maintaining said plasma during a diamond deposition time period.

摘要翻译： 制造金刚石材料的方法包括提供沉积室; 将基板放置在所述沉积室中; 密封并抽空所述沉积室; 允许适用于金刚石沉积的沉积室气体; 将所述衬底加热至金刚石沉积温度; 点燃和维持邻近所述衬底的生长表面的等离子体，使得所述等离子体从所述衬底的所述生长表面延伸不超过1mm; 以及在金刚石沉积时间期间维持所述等离子体。

公开(公告)号：US06692714B2

公开(公告)日：2004-02-17

申请号：US10338136

申请日：2003-01-08

申请人： Suresh Shankarappa Vagarali ,  Steven William Webb ,  William Edwin Jackson ,  William Frank Banholzer ,  Thomas Richard Anthony ,  George Rene Kaplan

发明人： Suresh Shankarappa Vagarali ,  Steven William Webb ,  William Edwin Jackson ,  William Frank Banholzer ,  Thomas Richard Anthony ,  George Rene Kaplan

IPC分类号： C01B3106

CPC分类号： B01J3/06 ,  B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0695 ,  C30B29/04 ,  C30B33/00

摘要： The present invention is directed to a method for changing the color of colored natural diamonds. The method includes placing a discolored natural diamond in a pressure-transmitting medium which is consolidated into a pill. Next, the pill is placed into a high pressure/high temperature (HP/HT) press at elevated pressure and elevated temperature for a time sufficient to improve the color of the diamond. The diamond may be exposed at elevated-pressure and elevated-temperature conditions within the graphite-stable region of the carbon-phase diagram—without significant graphitization of the diamond, or above the diamond-graphite equilibrium and within the diamond-stable region of the carbon-phase diagram. Finally, the diamond is recovered from said press. Colorless Type Ia and Type II diamonds may be made by this method.

摘要翻译： 本发明涉及一种改变有色天然钻石颜色的方法。 该方法包括将变色的天然金刚石置于压力传递介质中，将其固结成丸剂。 接下来，将药丸置于高压/高温（HP / HT）压机中，在高压和升高的温度下，足以改善金刚石的颜色。 金刚石可以在碳相图的石墨稳定区域内的高压和高温条件下暴露，没有金刚石的显着石墨化，或高于金刚石 - 石墨平衡，并且在金刚石稳定区域内 碳相图。 最后，从所述印刷机中回收钻石。 可以通过该方法制造无色Ia型和II型金刚石。

公开(公告)号：US06576211B1

公开(公告)日：2003-06-10

申请号：US09555528

申请日：2000-08-04

申请人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges ,  Moosa Mahomed Adia

发明人： Geoffrey John Davies ,  Raymond Albert Chapman ,  Aulette Stewart ,  Lesley Kay Hedges ,  Moosa Mahomed Adia

IPC分类号： C01B3106

CPC分类号： B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0685

摘要： A method of making a bonded, coherent material comprising a mass of crystals, preferably diamond crystals, in a matrix is provided. The steps include providing a source of the crystals of the type to be grown and which are substantially free of macroscopically faceted surfaces, producing a reaction mass by bringing the source crystals into contact with a suitable 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 conditions of crystal growth being chosen such that the source crystals are converted to crystals having developed macroscopic facets of low Miller index. Preferably the conditions of elevated temperature and pressure used are such that the Wulff effect dominates.

摘要翻译： 提供了一种制备包含矩阵中的大量晶体，优选金刚石晶体的粘结的粘结材料的方法。 这些步骤包括提供待生长的晶体的源，并且基本上没有宏观面刻面，通过使源晶体与合适的溶剂/催化剂接触而产生反应物质，使反应物料经受 在高温/高压装置的反应区中适合于晶体生长的升高的温度和压力以产生材料并从反应区除去材料，选择晶体生长条件使得源晶体转变为具有 发展低米勒指数的宏观面。 优选地，使用的升高的温度和压力的条件使得Wulff效应占主导地位。

公开(公告)号：US06337060B1

公开(公告)日：2002-01-08

申请号：US08662022

申请日：1996-06-12

申请人： Akio Hiraki ,  Toshimichi Ito ,  Akimitsu Hatta ,  Hiroshi Makita ,  Kazuhito Nishimura ,  Hiroshi Ishizuka ,  Satoru Hosomi

发明人： Akio Hiraki ,  Toshimichi Ito ,  Akimitsu Hatta ,  Hiroshi Makita ,  Kazuhito Nishimura ,  Hiroshi Ishizuka ,  Satoru Hosomi

IPC分类号： C01B3106

CPC分类号： C01B32/28

摘要： The principal objects of the invention is to provide diamond fine particles with a surface nature so improved as to form a stable, uniform suspension or dispersion in a common medium such as water and alcohol. Another object is to provide an effective technique for producing hydrophilic diamond fine particles by chemically modifying the particle surface nature, while removing at the same time contaminants and foreign materials which coexist with the diamond. In the invention, diamond particles are treated by boiling in the treatment fluid of sulfuric acid solution, which is in particular of concentrated or fuming nature, at a temperature more than 200° C., which is preferably 250° C. or more.

摘要翻译： 本发明的主要目的是提供具有如此改进的表面性质的金刚石细颗粒，以在普通介质如水和醇中形成稳定的均匀悬浮液或分散体。 另一个目的是提供通过化学改性颗粒表面性质同时同时除去与金刚石共存的污染物和异物来生产亲水性金刚石细颗粒的有效技术。 在本发明中，金属颗粒在温度超过200℃，优选为250℃以上的温度下，在特别浓缩或发烟性质的硫酸溶液的处理液中沸腾处理。