The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2009
Filed:
Sep. 15, 2008
Yin Tang, Ann Arbor, MI (US);
Anthony C. Sutorik, Milan, MI (US);
Long Nguyen, Ann Arbor, MI (US);
Tom Hinklin, Kalamazoo, MI (US);
William H. Rhodes, Lexington, MA (US);
David Scerbak, Traverse City, MI (US);
Yin Tang, Ann Arbor, MI (US);
Anthony C. Sutorik, Milan, MI (US);
Long Nguyen, Ann Arbor, MI (US);
Tom Hinklin, Kalamazoo, MI (US);
William H. Rhodes, Lexington, MA (US);
David Scerbak, Traverse City, MI (US);
Nanocerox, Inc., Ann Arbor, MI (US);
Abstract
A composition is provided that includes a plurality of calcined particles of terbium aluminum oxide having a mean particle domain size of between 30 and 600 nanometers. A translucent article having a surface includes polycrystalline terbium aluminum garnet having a mean grain size from 1 to 10 microns and light scattering inclusions of aluminum-rich oxide and/or terbium-rich oxide that are present at less than 2 surface area percent of the surface. A process for forming such an article involves sintering the above provided composition at a temperature between 1500° C. and 1700° C. to yield a sintered article. The article has improved translucency and even transparency as sintering is performed under vacuum at a temperature between 1610° C. and 1680° C. Hot isostatic pressing alone or in combination with article polishing also improves article translucency.