Sintered silicon nitride and silicon nitride tool

Details Sintered silicon nitride and silicon nitride tool Sintered silicon nitride and silicon nitride tool

2005-03-01

2005-03-01

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S097300

Reexamination Certificate

active

06861382

ABSTRACT:
Sintered silicon nitride and a silicon nitride tool. The mean major axis length, the mean minor axis length, and the aspect ratio, represented by (mean major axis length/mean minor axis length) of constituent sintered silicon nitride grains in a silicon nitride tool are controlled, and the thermal conductivity and/or fracture toughness Kc thereof are enhanced, thereby providing a tool having a cutting edge which is not prone to chipping.

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European Search Report for EP 02 25 7927 dated Mar. 30, 2004.

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