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Method of making lightweight high performance ceramic material

United States Patent

June 23, 2009
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method of making a sintered ceramic composition includes the steps of: providing a powder that includes at least 50 wt. % boron carbide and 0.05 wt. % to 30 wt. % of at least one oxide selected from oxides of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy Ho, Er, Tm, Yb, and Lu; milling the powder to form a milled powder; drying the milled powder to form a milled, dried powder; and consolidating the milled, dried powder at a temperature in the range of C. to C. to form a sintered ceramic composition having a density of at least 90% of theoretical density, the sintered ceramic composition including zirconium diboride in an amount in the range of 1 wt. % to 10 wt. %.
Nunn; Stephen D. (Knoxville, TN)
UT-Battelle, LLC (Oak Ridge, TN)
12/ 174,969
July 17, 2008
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to contract no. DE-AC05-00OR22725 between the United States Department of Energy and UT-Battelle, LLC.