| 摘要 |
A machine is disclosed for converting graphite to diamond which includes a cylindrical reaction chamber and a reaction vessel positioned in the reaction chamber for holding the charge of graphite to be converted to diamond. A piston having a fixed length and fixed diameter is positioned in the reaction chamber with its first end contacting the reaction vessel and its second end extending out of the reaction chamber. Means are provided for applying a force to the second end of the piston, thereby generating high pressure within the reaction chamber. Further means are provided for maintaining the ratio of the unsupported length to the diameter of the piston at a value less than the ratio of the fixed length to the fixed diameter of the piston. |
