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Method of making and ceramic articles with multiple regions of distinct density

United States Patent

July 3, 2012
View the Complete Patent 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; Michael A. (Albuquerque, NM), Montoya; Ted V. (Albuquerque, NM), Spindle, Jr.; Thomas L. (Edgewood, NM)
Sandia Corporation (Albuquerque, NM)
12/ 543,540
August 19, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States Government has certain rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.