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Joining of materials using laser heating

United States Patent

6,586,704
July 1, 2003
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A method for diffusion bonding ceramic layers such as boron carbide, zirconium carbide, or silicon carbide uses a defocused laser beam to heat and to join ceramics with the use of a thin metal foil insert. The metal foil preferably is rhenium, molybdenum or titanium. The rapid, intense heating of the ceramic/metal/ceramic sandwiches using the defocused laser beam results in diffusive conversion of the refractory metal foil into the ceramic and in turn creates a strong bond therein.
Cockeram; Brian V. (North Huntingdon, PA), Hicks; Trevor G. (West Mifflin, PA), Schmid; Glenn C. (Bethel Park, PA)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 854,551
May 15, 2001
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to a contract with the U.S. Department of Energy.