Silicon nitride based cutting tool

Details Silicon nitride based cutting tool Silicon nitride based cutting tool

1985-06-20

1986-08-19

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Refractory

51307, 82 1C, 501152, C04B 3558

Patent

active

046070176

ABSTRACT:
A silicon nitride based cutting tool is disclosed consisting essentially of in percent by weight about 5% aluminum oxide, about 6% yttrium oxide, from about 1.5% to about 5.5% silicon dioxide, and the balance silicon nitride, and having a density of at least about 99% of the theoretical density.

REFERENCES:
patent: 4127416 (1978-11-01), Lumby et al.
patent: 4280973 (1981-07-01), Moskowitz et al.
patent: 4323325 (1982-04-01), Samanta et al.
patent: 4462817 (1984-07-01), Wolfe et al.

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