High pressure and high temperature production of diamonds

本发明涉及一种用于处理变色的天然钻石的方法，特别是对IIa级钻石和主要以氮作为B核心的IaA/B级钻石进行处理的方法。该方法包括：将一变色的天然钻石预先分块和预先成形，以防止它在高压/高温(HP/HT)压制过程中破裂，将该变色的天然钻石埋入被压实成丸剂的压力传递介质中。然后，将该丸剂放入高压/高温(HP/HT)压机内暴露在碳相图的石墨稳定区或钻石稳定区内的高压和高温下保持一段时间，该时间足以改进该钻石的颜色。最后从所述压机中重新获得该钻石，由该方法可获得无色的和各种颜色的钻石。 The present invention is directed to a method for treating...

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Bibliographische Detailangaben
Hauptverfasser:	W.F. BANHOLZER, T.R. ANTHONY, J.K. CASEY
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING INORGANIC CHEMISTRY MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHING PRESSES PRESSES IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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