公开(公告)号：US07241434B2

公开(公告)日：2007-07-10

申请号：US10344249

申请日：2001-08-08

申请人： Thomas R. Anthony ,  Yavuz Kadioglu ,  Suresh S. Vagarali ,  Steven W. Webb ,  William E. Jackson ,  William F. Banholzer ,  John K. Casey ,  Alan C. Smith

发明人： Thomas R. Anthony ,  Yavuz Kadioglu ,  Suresh S. Vagarali ,  Steven W. Webb ,  William E. Jackson ,  William F. Banholzer ,  John K. Casey ,  Alan C. Smith

IPC分类号： C01B31/06

CPC分类号： B01J3/062 ,  B01J3/067 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0695 ,  B24B19/16 ,  B30B11/004 ,  B30B11/007

摘要： The present invention is directed to a method for treating discolored natural diamond, especially Type IIa diamond and Type IaA/B diamond with nitrogen as predominantly B centers, for improving its color. The method includes preblocking and preshaping a discolored natural diamond to prevent its breakage in a high pressure/high temperature (HP/HT) press, placing said discolored natural diamond in a pressure transmitting medium which is consolidated into a pill. Next, the pill is placed into a HP/HT press at elevated pressure and elevated temperature within the graphite-stable or diamond-stable range of the carbon phase diagram for a time sufficient to improve the color of said diamond. Finally, the diamond is recovered from said press. Colorless and fancy colored diamonds can be made by this method.

摘要翻译： 本发明涉及一种用于处理变色的天然金刚石，特别是II型金刚石和具有氮作为主要B中心的IaA / B型金刚石，以改善其颜色。 该方法包括预先阻挡和预变形变色的天然金刚石，以防止其在高压/高温（HP / HT）压机中破裂，将所述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，将药片放置在HP / HT压机中，在碳相图的石墨稳定或金刚石稳定范围内的升高的压力和升高的温度下，足以改善所述金刚石的颜色。 最后，从所述印刷机中回收钻石。 无色和花式彩色钻石可以通过这种方法制成。