Transparent polycrystalline yttrium aluminum garnet

Details Transparent polycrystalline yttrium aluminum garnet Transparent polycrystalline yttrium aluminum garnet

2005-01-18

2005-01-18

Sample, David (Department: 1755)

Compositions: ceramic

Ceramic compositions

Yttrium, lanthanide, actinide, or transactinide containing

C501S153000, C313S493000, C313S636000

Reexamination Certificate

active

06844285

ABSTRACT:
A transparent polycrystalline yttrium aluminum garnet (YAG) ceramic is described wherein the ceramic is colorless and transparent in both as-sintered and post-sinter, air-fired states which makes it highly desirable for lamp applications. The transparent YAG ceramic is co-doped with an amount of MgO and an amount of ZrO2wherein the weight ratio of MgO to ZrO2is from about 1.5:1 to 3:1.

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