Silicon nitride sintered body

Details Silicon nitride sintered body Silicon nitride sintered body

1989-09-07

1991-09-17

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 97, C04B 3558

Patent

active

050495313

ABSTRACT:
A sintered body of silicon nitride having high strength, toughness and oxidation resistance consists essentially of, by weight percentages, 0.5 to 7.0% of a Mg component calculated as MgO, 0.5 to 7.0% of a Zr component calculated as ZrO.sub.2, 0.5 to 10.0% of a Ce component calculated as CeO.sub.2, and the balance being Si.sub.3 N.sub.4. The sum of Mg, Zr and Ce components calculated as oxides is 3 to 20% by weight. This product is suitable for engine parts or cutting tools.

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patent: 4764490 (1988-08-01), Yamakawa
patent: 4764490 (1988-08-01), Yamakawa et al.
patent: 4777822 (1988-10-01), Uemura et al.
patent: 4871697 (1989-10-01), Hayakawa

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