Method for manufacturing diamonds in a hydrogen free environment
Abstract
Abstract A METHOD OF MANUFACTURING DIAMOND FROM GRAPHITE IN A HYDROGEN FREE ENVIRONMENT IS DISCLOSED IN WHICH A REACTION VESSEL IS FIRST FORMED FROM AN ANHYDROGENOUS MATERIAL. A CHARGE OF GRAPHITE AND A CARBON SOLVENT IS PLACED IN THE REACTION VESSEL AND THE REACTION VESSEL IS PLACED IN THE REACTION CHAMBER. A PLUNGER IS PLACED IN THE REACTION CHAMBER TO GENERATE HIGH PRESSURES THEREIN, AND THE RELATIVELY MOVING SURFACES BETWEEN THE REACTION CHAMBER AND THE PLUNGER ARE LUBRICATED WITH AN ANHYDROGENOUS LUBRICANT. THE TEMPERATURE AND PRESSURE IN THE REACTION CHAMBER ARE THEN RAISED UNTIL THE CONDITIONS IN THE REACTION CHAMBER ARE ABOVE THE DIAMOND-GRAPHITE EQUILIBRIUM LINE OF THE CARBON PHASE DIAGRAM AND THESE PRESSURE AND TEMPERATURE CONDITIONS ARE MAINTAINED FOR A PREDETERMINED TIME PERIOD UNTIL AT LEAST A PORTION OF THE GRAPHITE IN THE CHARGE IS CONVERTED TO DIAMOND.
Inventors
- 👤 George C Kennedy
Bibliographic Details
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