Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1988-11-03
1990-09-25
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
51309, C04B 3556
Patent
active
049593323
ABSTRACT:
A metalcutting insert is provided with an alumina based ceramic composition composed of (in volume percent, v/o): about 1.5 to 12.5 silicon carbide whiskers and about 7.5 to 17.5 v/o zirconia. The silicon carbide whiskers and zirconia are substantially homogeneously distributed in an alumina base matrix. Preferably, at least about 7 v/o of the alumina based ceramic composition is tetragonal zirconia.
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Billman Elizabeth R.
Mehrotra Pankaj K.
Dixon Jr. William R.
Jones Deborah
Kennametal Inc.
Prizzi John J.
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