Ceramic material and cutting tools made thereof

Details Ceramic material and cutting tools made thereof Ceramic material and cutting tools made thereof

2007-12-18

2009-12-08

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Refractory

C428S698000, C428S702000, C428S704000, C428S446000

Reexamination Certificate

active

07629281

ABSTRACT:
The present invention relates to a ceramic material consisting of β-sialon (Si6−zAlzOzN), polytype 12H, an intergranular amorphous or partly crystalline phase, and containing yttrium with a z-value of from about 0.7 to less than about 1.5. The ceramic material is useful as cutting tool insert for machining of heat resistant super alloys, with good notch wear, acceptable flank wear and sufficient toughness.

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