Method and apparatus for radio frequency ceramic sintering

Patent · Tue Nov 30 00:00:00 EST 1993

OSTI ID:5294496

Hoffman, D J; Kimrey, Jr, H D

Radio frequency energy is used to sinter ceramic materials. A coaxial waveguide resonator produces a TEM mode wave which generates a high field capacitive region in which a sample of the ceramic material is located. Frequency of the power source is kept in the range of radio frequency, and preferably between 60-80 MHz. An alternative embodiment provides a tunable radio frequency circuit which includes a series input capacitor and a parallel capacitor, with the sintered ceramic connected by an inductive lead. This arrangement permits matching of impedance over a wide range of dielectric constants, ceramic volumes, and loss tangents. 6 figures.

• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
• Patent Number(s): US 5266762; A
• Application Number: PPN: US 7-971204
• OSTI ID: 5294496
• Resource Relation: Patent File Date: 4 Nov 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
SINTERING
RF SYSTEMS
DESIGN
RESONATORS
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication