Patent ID: 8871024

Claim:
Apparatus for high pressure material processing, the apparatus comprising: a cylindrical capsule region including a first region and a second region, having a length between the first region and the second region; a heating member enclosing the cylindrical capsule region; a sleeve member adapted to form a sealed region enclosing the heating member, the sealed region being characterized by an internal pressure level capable of tightening a contact between the sleeve member and a seal; a gas pressure intensifier for pumping gaseous species into the sealed region at a predetermined range of pressure levels; at least one annular ceramic member having a predetermined thickness disposed continuously around a perimeter of the sleeve member, the annular member being made of a material having a compressive strength of at least 0.5 GPa and having a thermal conductivity of less than about 4 watts per meter-Kelvin; and a high strength enclosure material over the annular ceramic member to form a high strength enclosure.