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Method of Making Ceramic Articles with Multiple Distinct Regions of Distinct Density

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A method for producing ceramic articles with multiple distinct regions of density by blending pore formers of different types or amounts with ceramic particles to create multiple pore former/ceramic particle mixtures. The mixtures are placed in a divided die cavity, divider removed and subjected to compaction under pressure to produce a compacted billet. The compacted billet is thermally processed to volatilize organics from the billet and sinter the billet, creating a cohesive billet of ceramic having two or more regions of density.
Moore, Roger H. (Albuquerque, NM), Hutchinson, Michae A. (Albuquerque, NM), Montoya, Ted V. (Albuquerque, NM), Spindle, JR., Thomas L. (Edgewood, NM)
Sandia Corporation (Albuquerque NM)
13/ 533,758
June 26, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] The United States Government has certain rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.