Transparent yttria ceramics containing magnesia or magnesium alu

Details Transparent yttria ceramics containing magnesia or magnesium alu Transparent yttria ceramics containing magnesia or magnesium alu

1979-01-29

1979-11-20

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 395, 106 734, C04B 3550

Patent

active

041749731

ABSTRACT:
An article of manufacture comprising a substantially transparent high density polycrystalline yttria-based body consisting essentially of yttria and from 0.1 to 5 wt. % MgO or from 0.1 to 5 wt. % MgAl.sub.2 O.sub.4.
Transparent yttria-based bodies according to this invention are particularly useful as envelopes for high pressure sodium vapor lamps.

REFERENCES:
patent: 3545987 (1970-12-01), Anderson
patent: 3640887 (1972-02-01), Anderson
patent: 3873657 (1975-03-01), Toda et al.
patent: 3878280 (1975-04-01), Dutta et al.
patent: 4098612 (1978-07-01), Rhodes et al.
patent: 4115134 (1978-09-01), Rhodes

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