Ceramic compositions and articles prepared therefrom

Details Ceramic compositions and articles prepared therefrom Ceramic compositions and articles prepared therefrom

1978-12-26

1980-07-08

Vertiz, O. R.

Chemistry of inorganic compounds

Rare earth compound

106 732, 264 63, 264 66, C04B 3550, C04B 3544

Patent

active

042117585

ABSTRACT:
A transparent or translucent article of manufacture such as a discharge tube for a metal vapor arc lamp is formed from a high density ceramic composition having a perovskite structure and having the formula:

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patent: 3545987 (1970-12-01), Anderson
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patent: 3640887 (1972-02-01), Anderson
patent: 3719550 (1973-03-01), Arendt
patent: 3764643 (1973-10-01), Muta et al.
patent: 3785992 (1974-01-01), Fay et al.
patent: 4098612 (1978-07-01), Rhodes et al.
patent: 4115134 (1978-09-01), Rhodes
Berndt, U. et al., "New Interlanthanide Perovskite Compounds," J. of Solid State Chemistry, 13, No. 1-2, Feb. 1975, pp. 131-135.
Geller, S. et al., "Phase Transitions in Perovskitelike Compounds of the Rare Earths," Physical Review B, vol. 2, No. 4, Aug. 1970, pp. 1167-1172.
Plakhty, V. et al., "X-Ray Study of the Phase Transition and Lattice Vibrations of Lanthanum Aluminate," Phys. Stat. Sol. 29, 1968, pp. K81-K83.
Leonov, A. et al., "High Temperature Chemistry of Cerium in the Systems Cerium Oxides-Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3, Ga.sub.2 O.sub.3," Translated from Izvestiya Akademii Nauk, USSR, Neorganicheskie Materialy, vol. 2, No. 3, Mar. 1966, pp. 517-523.

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