Use of free silicon in liquid phase sintering of silicon nitride

Details Use of free silicon in liquid phase sintering of silicon nitride Use of free silicon in liquid phase sintering of silicon nitride

1984-07-26

1985-11-12

McCarthy, Helen M.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 82, 501 97, 501 98, C04B 3558

Patent

active

045527113

ABSTRACT:
This invention relates to the production of improved high density nitrogen based ceramics by liquid-phase densification of silicon nitride or a compound of silicon-nitrogen-oxygen-metal, e.g. a sialon. In the process and compositions of the invention minor amounts of finely divided silicon are employed together with the conventional liquid phase producing additives to enhance the densification of the resultant ceramic.

REFERENCES:
patent: 3215547 (1965-11-01), Parr et al.
patent: 3262761 (1966-07-01), Bechtold
patent: 3749571 (1973-07-01), Stibbs et al.
patent: 3839540 (1974-10-01), Arrol
patent: 3974106 (1976-08-01), Richerson
patent: 4038092 (1977-07-01), Baumgartner et al.
patent: 4073845 (1978-02-01), Buljan et al.
patent: 4093687 (1978-06-01), Greskovich et al.
patent: 4099979 (1978-07-01), Lange et al.
patent: 4117095 (1978-09-01), Komeya et al.
patent: 4124402 (1978-11-01), Greskovich et al.
patent: 4147759 (1979-04-01), Demit
patent: 4177230 (1979-12-01), Mazdiyasni
patent: 4179301 (1979-12-01), Buljan
patent: 4243621 (1981-01-01), Mori et al.
patent: 4280973 (1981-07-01), Moskowitz et al.
patent: 4285895 (1981-08-01), Mangels et al.
patent: 4310499 (1982-01-01), Mitomo et al.
patent: 4327187 (1982-04-01), Komatsu et al.
patent: 4379110 (1983-04-01), Greskovich et al.
patent: 4383958 (1983-05-01), Moschetti et al.
patent: 4438051 (1984-03-01), Mitomo et al.
Greskovich, C., Journal of the American Ceramic Society, 64, 725-730, (12/81), "Preparation of High Density Si.sub.3 N.sub.4 by a Gas-Pressure Sintering Process".
Jack, K. H., Journal of Materials Science 11, 1135-1158, (1976), "Review-Sialons and Related Nitrogen Ceramics".
Lange, F. F., International Metals Review, 1980, No. 1, pp. 1-20, "Silicon Nitride Polyphase Systems: Fabrication, Microstructure, and Properties".
Mitomo, J., Journal of Materials Science, 11, 1103-1107, (1976), "Pressure Sintering of Si.sub.3 N.sub.4 ".
Smith, J. T. et al., Proceedings of Symposium of Factors in Densification and Sintering of Oxide and Non-Oxide Ceramics, 426-441, (1978, Japan).
Terwilliger, G. R. et al., Journal of Materials Science 10, 1169-1174, (1975), "Pressureless Sintering of Si.sub.3 N.sub.4 ".
Priest, H. F. et al.,-"Sintering of Si.sub.3 N.sub.4 Under High Nitrogen Pressure" J. Am. Cer. Soc., Jan.-Feb. 1977, p. 81.
Mitomo, M. et al.-"Fabrication of High Strength B-Sialon by Reaction Sintering"-J. Materials Science 14, (1979), pp. 2309-2316.

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