Preparation process of high-permittivity material

Details Preparation process of high-permittivity material Preparation process of high-permittivity material

1992-06-30

1993-09-28

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 66, 264 82, 264570, 264 61, C04B 3564

Patent

active

052484653

ABSTRACT:
Disclosed herein is a process for the preparation of a high-permittivity material. The process comprises pre-calcining a ceramic material under a predetermined pressure to obtain a sintered body, and then subjecting the sintered body to a hot isostatic pressing treatment in an oxidizing atmosphere. The high-permittivity material is low in void content, is very small in dispersion of its dielectric constant and hence has excellent dielectric properties.

REFERENCES:
patent: 3853973 (1974-12-01), Hardtl
patent: 4816072 (1989-03-01), Harley et al.
patent: 5039464 (1991-08-01), Wank

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