Sinterable fluorite oxide ceramics

Details Sinterable fluorite oxide ceramics Sinterable fluorite oxide ceramics

1983-01-14

1984-08-14

Doll, John

Compositions: ceramic

Ceramic compositions

Refractory

501 94, 501121, 501123, 501135, 501152, C04B 3504, C04B 3548

Patent

active

044657781

ABSTRACT:
Zirconia ZrO.sub.2, ceria CeO.sub.2 or thoria ThO.sub.2 may be rendered ionically conductive; a typical composition is ZrO.sub.2 +12 mol % CaO.
This is sintered in the solid state as a 40 nm powder using as a sintering additive 0.1 mol % MgO at 1450 C. for 4 hours; a density 98% of the theoretical is achieved.
For other fluorite oxide compositions, MgO is also useful as a sintering additive but in different proportions.

REFERENCES:
patent: 3350230 (1967-10-01), Tannenberger et al.
patent: 3574645 (1971-04-01), Anderson
patent: 4219359 (1980-08-01), Miwa et al.

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