C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/1
C04B 35/00 (2006.01) C04B 35/505 (2006.01)
Patent
CA 1120957
20,739 -12- ABSTRACT OF THE DISCLOSURE 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. % MgAl2O4. Transparent yttria-based bodies according to this invention are particularly useful as envelopes for high pressure sodium vapor lamps.
341847
Reid F. Joseph
Rhodes William H.
Gte Laboratories Incorporated
R. William Wray & Associates
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