| 摘要 |
971,157. Very high pressure apparatus. GENERAL ELECTRIC CO. Nov. 7, 1960 [Nov. 27, 1959], No. 38180/60. Heading B1X. [Also in Division H5] A reaction vessel for use in high pressure (100,000 atmospheres and more) high temperature (2200 ‹C. and more) apparatus, e.g. for manufacturing synthetic diamonds by conversion of carbonaceous material in the presence of a catalyst metal, comprises an outer electrically non-conductive and thermally insulating cylinder 51, e.g. of pyrophyllite, provided at least at one end with electric contact means in the form of discs 57, 57<SP>1</SP> in contact with a graphite heater tube 52 which is electrically insulated by a cylinder 53 of heat resistant material, e.g. alumina, zirconia, magnesia or boron nitride, from the graphite charge 54 which is contained in a tube 55 of a catalyst metal such as nickel. A plug 56 of alumina is fitted in one or each end of the heater tube 52. In a modified larger arrangement, Fig. 2 (not shown), a rod of alumina surrounded by a second tube of catalyst metal is provided axially of the tube 55, the graphite charge being contained in the annular space between the two catalyst tubes. Specifications 829,990 and 830,210 are referred to. |
