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Compound transparent ceramics and methods of preparation thereof

United States Patent

8,329,090
December 11, 2012
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
According to one embodiment, a method for forming a composite transparent ceramic preform includes forming a first suspension of oxide particles in a first solvent which includes a first dispersant but does not include a gelling agent, adding the first suspension to a first mold of a desired shape, and uniformly curing the first suspension in the first mold until stable. The method also includes forming a second suspension of oxide particles in a second solvent which includes a second dispersant but does not include a gelling agent, adding the second suspension to the stable first suspension in a second mold of a desired shape encompassing the first suspension and the second suspension, and uniformly curing the second suspension in the second mold until stable. Other methods for forming a composite transparent ceramic preform are also described according to several other embodiments. Structures are also disclosed.
Hollingsworth; Joel P. (Oakland, CA), Kuntz; Joshua D. (Livermore, CA), Soules; Thomas F. (Livermore, CA), Landingham; Richard L. (Livermore, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
12/ 603,195
20100105539
October 21, 2009
The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.