Metal oxide dielectric dense bodies, precursor powders therefor,

Details Metal oxide dielectric dense bodies, precursor powders therefor, Metal oxide dielectric dense bodies, precursor powders therefor,

1991-09-27

1992-07-14

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501118, 501119, 501121, 501122, 501128, 501153, 501154, 423329, 423635, C04B 3504, C04B 3514

Patent

active

051302802

ABSTRACT:
A metal oxide dielectric dense body, comprising (I) grains having a predominant crystalline phase (a) a primary metal oxide selected from the group consisting of silicon and magnesium oxide and (b) optionally a secondary metal oxide selected from the group consisting of aluminum and zinc oxide and (II) between about 1 and about 20 atom % bismuth, vanadium, or boron oxide or combinations thereof, discontinuously located at the boundaries of the crystalline grains or as inclusions in the crystalline grains, the atom %'s based on the total atoms of bismuth, vanadium, boron, silicon, magnesium, aluminum, and zinc. The dense body has a density which is at least 95% of theoretical.

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patent: 4418025 (1983-11-01), Prochazka et al.
patent: 4745092 (1988-05-01), Prunier, Jr.

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