Title:
TRANSLUCENT POLYCRYSTALLINE ALUMINA CERAMIC
Document Type and Number:
WIPO Patent Application WO/2008/144118
Kind Code:
A9
Abstract:
A polycrystallinc body comprising aluminum oxide, magnesium oxide, hafnium oxide, and yttrium oxide in which alumina grains have an average size of at least lOμm and wherein the yttrium oxide is present in an amount of at least 6 ppm of the weight of the ceramic body, and the magnesium and hafnium oxides are present at a molar ratio of about 0.5: 1 to about 3: 1.
Inventors:
QIN SHUYI (CN)
GAO MING (CN)
SIVARAMAN KARTHIK (US)
GAO MING (CN)
SIVARAMAN KARTHIK (US)
Application Number:
PCT/US2008/059375
Publication Date:
August 05, 2010
Filing Date:
April 04, 2008
Export Citation:
Assignee:
GEN ELECTRIC (US)
QIN SHUYI (CN)
GAO MING (CN)
SIVARAMAN KARTHIK (US)
QIN SHUYI (CN)
GAO MING (CN)
SIVARAMAN KARTHIK (US)
International Classes:
C04B35/115; H01J9/24; H01J61/30
Attorney, Agent or Firm:
DIMAURO, Peter, T. et al. (Global Patent Operation187 Danbury Road, Suite 20, Wilton CT, US)
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