Patent ID: 8168092
Filing Date: 2012-05-01
Classification: B28B,B30B,C04B

Abstract:
1. A process for the production of ceramics comprising the steps of: a) placing a graphite layer into a mold arranged inside a heater and configured to receive a die, the mold being a solid-solution hardened and particle-strengthened molybdenum-based alloy comprising titanium carbide and zirconium carbide, b) placing a molybdenum foil onto the graphite layer in the mold; c) placing a ceramic powder onto the molybdenum foil; d) placing additional layers of ceramic powder and additional layers of molybdenum foil and graphite layer between each layer of ceramic powder in the mold to form a stack; e) arranging a second to last layer of the stack to be molybdenum foil; f) arranging a last layer of the stack to be a graphite layer; g) creating a vacuum of ≧1×10 h) heating to a temperature of ≧1000° C. to ≦1400° C.; i) applying a pressure of ≧100 MPa to ≦220 MPa with the die; and wherein the ceramic powder comprises Gd