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Method of forming a ceramic to ceramic joint

United States Patent

April 13, 2010
View the Complete Patent at the US Patent & Trademark Office
A method of joining at least two sintered bodies to form a composite structure, includes: providing a joint material between joining surfaces of first and second sintered bodies; applying pressure from 1 kP to less than 5 MPa to provide an assembly; heating the assembly to a conforming temperature sufficient to allow the joint material to conform to the joining surfaces; and further heating the assembly to a joining temperature below a minimum sintering temperature of the first and second sintered bodies. The joint material includes organic component(s) and ceramic particles. The ceramic particles constitute 40-75 vol. % of the joint material, and include at least one element of the first and/or second sintered bodies. Composite structures produced by the method are also disclosed.
Cutler; Raymond Ashton (Bountiful, UT), Hutchings; Kent Neal (Salt Lake City, UT), Kleinlein; Brian Paul (Salt Lake City, UT), Carolan; Michael Francis (Allentown, PA)
Air Products and Chemicals, Inc. (Allentown, PA), Ceramatec, Inc. (Salt Lake City, UT)
11/ 332,995
January 17, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under DOE Cooperative Agreement No. DE-FC26-98FT40343 between Air Products and Chemicals, Inc., and the United States Department of Energy. The Government has certain rights to this invention