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Title: Method and apparatus for radio frequency ceramic sintering

Abstract

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.

Inventors:
;
Publication Date:
OSTI Identifier:
5294496
Patent Number(s):
US 5266762; A
Application Number:
PPN: US 7-971204
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 4 Nov 1992
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; SINTERING; RF SYSTEMS; DESIGN; RESONATORS; ELECTRONIC EQUIPMENT; EQUIPMENT; FABRICATION; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

Hoffman, D J, and Kimrey, Jr, H D. Method and apparatus for radio frequency ceramic sintering. United States: N. p., 1993. Web.
Hoffman, D J, & Kimrey, Jr, H D. Method and apparatus for radio frequency ceramic sintering. United States.
Hoffman, D J, and Kimrey, Jr, H D. Tue . "Method and apparatus for radio frequency ceramic sintering". United States.
@article{osti_5294496,
title = {Method and apparatus for radio frequency ceramic sintering},
author = {Hoffman, D J and Kimrey, Jr, H D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {11}
}