Fabrication of dense SI.sub.3 N.sub.4 ceramics using CaO-TiO.sub

Details Fabrication of dense SI.sub.3 N.sub.4 ceramics using CaO-TiO.sub Fabrication of dense SI.sub.3 N.sub.4 ceramics using CaO-TiO.sub

1990-08-30

1992-05-05

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501 96, 501123, 501133, 501135, 264 65, 264 66, 423344, 423353, C04B 3548

Patent

active

051107724

ABSTRACT:
Ternary CaO-TiO.sub.2 -SiO.sub.2 compositions are discussed. These compositions are useful as sintering aids for silicon nitride sintering. Use of these ternary compositions allows silicon nitride to be effectively sintered at lower temperatures than when conventional yttria sintering aids are used.

REFERENCES:
patent: 4102698 (1978-07-01), Lange et al.
patent: 4407971 (1983-10-01), Komatsu et al.
patent: 4542109 (1985-09-01), Pasto
patent: 4591537 (1986-05-01), Aldinger et al.
patent: 4764490 (1988-08-01), Yamakawa et al.
N. Iwamoto et al., "Silicon Nitride Joining with Glass Solder in the System CaO-SiO.sub.2 -TiO.sub.2 ", Yogyo-Kyokai-Shi 94, pp. 880-886, Welding Research Institute.
N. Iwamoto et al., "Silicon Nitride Joining with Silicate Glass Solder (I)", Welding Research Institute of Osaka University.

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