Silicon nitride/silicon carbide composite powders

Dunmead, Stephen D; Weimer, Alan W; Carroll, Daniel F; Eisman, Glenn A; Cochran, Gene A; Susnitzky, David W; Beaman, Donald R; Nilsen, Kevin J

Title: Silicon nitride/silicon carbide composite powders

Patent · Tue Jun 11 00:00:00 EDT 1996

OSTI ID:870454

Dunmead, Stephen D ^[1]; Weimer, Alan W ^[1]; Carroll, Daniel F ^[1]; Eisman, Glenn A ^[1]; Cochran, Gene A ^[1]; Susnitzky, David W ^[1]; Beaman, Donald R ^[1]; Nilsen, Kevin J ^[1]

Midland, MI

Prepare silicon nitride-silicon carbide composite powders by carbothermal reduction of crystalline silica powder, carbon powder and, optionally, crystalline silicon nitride powder. The crystalline silicon carbide portion of the composite powders has a mean number diameter less than about 700 nanometers and contains nitrogen. The composite powders may be used to prepare sintered ceramic bodies and self-reinforced silicon nitride ceramic bodies.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

DOE Contract Number:: 86X-SK761C

Assignee:: Dow Chemical Company (Midland, MI)

Patent Number(s):: US 5525556

Application Number:: 08/484,539

OSTI ID:: 870454

Country of Publication:: United States

Language:: English

References (15)

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On the Preparation of Fine Silicon Nitride Powders Schwier, G. Progress in Nitrogen Ceramics https://doi.org/10.1007/978-94-009-6851-6_13	book	January 1983
Influence of Starting Powder Characteristics on Mechanical Properties of SiC-particle/Si₃N₄ Composites Akimune, Yoshio; Ogasawara, Toshio; Hirosaki, Naoto Journal of the Ceramic Society of Japan, Vol. 100, Issue 1160 https://doi.org/10.2109/jcersj.100.463	journal	January 1992
Silicon Nitride: Relations between Powder Characteristics and Sinterability Cambier, F.; Leriche, A.; Gilbart, E. The Physics and Chemistry of Carbides, Nitrides and Borides https://doi.org/10.1007/978-94-009-2101-6_2	book	January 1990
SiC-Si ₃N₄ Gradient Composite Ceramics by Special Hip Processing Dongliang, Jiang; Jihong, She; Shouhong, Tan 4th International Symposium on Ceramic Materials and Components for Engines https://doi.org/10.1007/978-94-011-2882-7_42	book	January 1992
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Synthesis of nitrogen ceramic povvders by carbothermal reduction and nitridation Part 1 Silicon nitride Cho, Y. W.; Charles, J. A. Materials Science and Technology, Vol. 7, Issue 4 https://doi.org/10.1179/mst.1991.7.4.289	journal	April 1991
Synthesis of Silicon Nitride Powder from Silica Reduction Inoue, Hiroshi; Komeya, Katsutoshi; Tsuge, Akihiko Journal of the American Ceramic Society, Vol. 65, Issue 12 https://doi.org/10.1111/j.1151-2916.1982.tb09951.x	journal	December 1982
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Preparation of Silicon Nitride from Silica Zhang, Shi-Chang; Cannon, W. Roger Journal of the American Ceramic Society, Vol. 67, Issue 10 https://doi.org/10.1111/j.1151-2916.1984.tb19684.x	journal	October 1984
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Title: Silicon nitride/silicon carbide composite powders

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