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

DWPI Title: Ceramic product for pulsed power generator, has two adjacent regions having different densities, where one region is co-sintered into cohesive component
Abstract: 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.
Use: Ceramic product. Uses include but are not limited to compact portable pulsed power generators used for flame initiation and detonation in pulse detonation engines for high-speed aircraft, pulsed electric field treatment of cancerous cells, ultra-wideband and high power microwave directed energy devices, free electron laser, X-ray imaging device and kinetic energy launchers e.g. railguns.
Advantage: The ceramic product having multiple distinct regions of pore morphology and density is provided. The product as ferroelectric element is effectively operated at elevated operating temperature.
Novelty: A ceramic product has a region (A) which is co-sintered into a cohesive component and having a density (d1), and another region (B) having density (d2). The region (B) is adjacent to region (A). The densities (d1) and (d2) are more than 0.
Filed: 8/19/2009
Application Number: US2009543540A
Tech ID: SD 10133.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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