Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1982-04-29
1985-10-01
O'Keefe, Veronica
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
428620, 428627, 501 89, 501 90, C22C 2900, C04B 3556
Patent
active
045446423
ABSTRACT:
A silicon carbide electrical insulator material of low dielectric constant comprising an electrically insulating sintered body containing silicon carbide as a main constituent and an element providing electrical insulating properties in sintered state, wherein the sintered body comprises an element selected from V family in the periodic table and the carrier concentration within the crystal grain of silicon carbide is 5.times.10.sup.17 cm.sup.-3 or less.
REFERENCES:
patent: 4172109 (1979-10-01), Smoak
patent: 4326039 (1982-04-01), Kriegesmann et al.
patent: 4370421 (1983-01-01), Matsushita et al.
patent: 4374793 (1983-02-01), Koga et al.
Maeda Kunihiro
Miyoshi Tadahiko
Hitachi , Ltd.
O'Keefe Veronica
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