Cutting tool
AssigneeKennametal Inc.
InventorsPankaj K. Mehrotra, Elizabeth R. Billman, Bernard North
Life of this patent
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Abstract
A ceramic composition comprising a polycrystalline alumina matrix having titanium carbide whiskers distributed therein. The composition comprises 50 to 90 volume percent high purity alumina, 10 to 50 volume percent single crystal titanium carbide whiskers, and up to 3 volume percent being the residue of sintering aids.
Claims6
Oxide-based ceramic cutting insert for chip forming machining of steel characterized in that said insert consists essentially of
- a matrix of aluminum oxide;
- up to 3% by volume of ZrO.sub.2 ;
- and
- 10-50% by volume of homogeneously dispersed whiskers of titanium carbide.
A ceramic cutting insert consisting essentially of
- a matrix of aluminum oxide;
- up to 3% by volume of ZrO.sub.2 ;
- and
- 10-50% by volume of whiskers distributed therein, said whiskers consisting essentially of titanium carbide.
A ceramic cutting insert consisting essentially of
- a matrix of aluminum oxide;
- up to 3% by volume of ZrO.sub.2 ;
- and
- 10-50% by volume of TiC whiskers distributed therein.
Oxide-based ceramic cutting insert for chip forming machining of steel characterized in that said insert consists essentially of
- a matrix of aluminum oxide;
- up to 3% by volume of ZrO.sub.2 ;
- and
- 10-40% by volume of homogeneously dispersed whiskers of titanium carbide.
A ceramic cutting insert comprising:
- a matrix of aluminum oxide;
- up to 3% by volume of ZrO.sub.2 ;
- and
- 10-50% by volume of whiskers distributed therein, said whiskers consisting essentially of single crystals of titanium carbide.
Dependencies are inferred from the claim text.