Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Reexamination Certificate
2008-05-20
2008-05-20
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
C501S096300, C501S127000, C264S663000
Reexamination Certificate
active
07375044
ABSTRACT:
A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent alumina powder and no more than about 5 volume percent of a sintering aid; and consolidating the powder mixture at a temperature equal to between about 1400 degrees Centigrade and 1850 degrees Centigrade to achieve a ceramic with a density equal to greater than 99 percent of theoretical density.
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Wu Shanghua
Yeckley Russell L.
Group Karl E
Kennametal Inc.
Prizzi John J.
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