Title:
CERAMICS COMPOSITION AND PRODUCTION OF CERAMICS WARE
Document Type and Number:
Japanese Patent JP3311924
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain ceramics composition bakable at 800-1000°C, having high relative dielectric constant and low dielectric loss tangent even in a high-frequency region of ≥1GHz and exhibiting high strength and provide a process for the production of the ceramics composition.
SOLUTION: This ceramics composition is composed of 10-40wt.% of a crystallized glass containing at least B2O3, SiO2, Al2O3 and ZnO, 5-70wt.% of SrTiO3 and 1-70wt.% of Al2O3. A powdery mixture of the above composition is formed and baked in a non-oxidizing atmosphere at 800-1000°C to obtain ceramics containing a perovskite-type crystal phase containing at least Sr and Ti, a spinel-type crystal phase containing at least Zn and Al, a rutile-type crystal phase and an Al2O3 crystal phase as the constituent crystal phases and having a dielectric constant of ≥10 and a transverse rupture strength of ≥20kg/mm2.
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Inventors:
Terashi Yoshitake
Application Number:
JP4252496A
Publication Date:
August 05, 2002
Filing Date:
February 29, 1996
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
C04B35/00; C04B35/111; C04B35/46; C04B35/495; H01L23/15; H01P7/10; H05K1/03; (IPC1-7): C04B35/495; C04B35/111; C04B35/46; H01P7/10; H05K1/03
Domestic Patent References:
| JP7187766A | ||||
| JP6234568A |