Polycrystalline alumina articles

Details Polycrystalline alumina articles Polycrystalline alumina articles

2005-09-30

2008-11-25

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Aluminum compound containing

C501S127000, C089S036020

Reexamination Certificate

active

07456122

ABSTRACT:
Polycrystalline alumina and methods for manufacturing polycrystalline alumina exhibiting improved transmission in the infrared region. In one embodiment, the percent real in-line transmittance is within about 2% of sapphire at selected wavelengths. In one or more embodiments, polycrystalline articles exhibit improved mechanical properties such as thermal shock resistance and hardness, which may find use in armor applications.

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PCT International Search Report - PCT/US05/35049 - 2 pgs.
PCT Written Opinion - PCT/US05/35049 - 6 pgs.

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