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Title: Method for producing silicon nitride/silicon carbide composite

Abstract

Silicon carbide/silicon nitride composites are prepared by carbothermal reduction of crystalline silica powder, carbon powder and optionally crsytalline silicon nitride powder. The crystalline silicon carbide portion of the composite has a mean number diameter less than about 700 nanometers and contains nitrogen.

Inventors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. (Midland, MI)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
870521
Patent Number(s):
US 5538675
Application Number:
08/227,751
Assignee:
Dow Chemical Company (Midland, MI) LLNL
DOE Contract Number:
86X-SK761C
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; producing; silicon; nitride; carbide; composite; composites; prepared; carbothermal; reduction; crystalline; silica; powder; carbon; optionally; crsytalline; portion; mean; diameter; 700; nanometers; contains; nitrogen; silica powder; carbide composite; nitride powder; silicon nitride; silicon carbide; crystalline silicon; producing silicon; carbon powder; carbide portion; carbothermal reduction; crystalline silica; contains nitrogen; /264/

Citation Formats

Dunmead, Stephen D., Weimer, Alan W., Carroll, Daniel F., Eisman, Glenn A., Cochran, Gene A., Susnitzky, David W., Beaman, Donald R., and Nilsen, Kevin J.. Method for producing silicon nitride/silicon carbide composite. United States: N. p., 1996. Web.
Dunmead, Stephen D., Weimer, Alan W., Carroll, Daniel F., Eisman, Glenn A., Cochran, Gene A., Susnitzky, David W., Beaman, Donald R., & Nilsen, Kevin J.. Method for producing silicon nitride/silicon carbide composite. United States.
Dunmead, Stephen D., Weimer, Alan W., Carroll, Daniel F., Eisman, Glenn A., Cochran, Gene A., Susnitzky, David W., Beaman, Donald R., and Nilsen, Kevin J.. Tue . "Method for producing silicon nitride/silicon carbide composite". United States. doi:. https://www.osti.gov/servlets/purl/870521.
@article{osti_870521,
title = {Method for producing silicon nitride/silicon carbide composite},
author = {Dunmead, Stephen D. and Weimer, Alan W. and Carroll, Daniel F. and Eisman, Glenn A. and Cochran, Gene A. and Susnitzky, David W. and Beaman, Donald R. and Nilsen, Kevin J.},
abstractNote = {Silicon carbide/silicon nitride composites are prepared by carbothermal reduction of crystalline silica powder, carbon powder and optionally crsytalline silicon nitride powder. The crystalline silicon carbide portion of the composite has a mean number diameter less than about 700 nanometers and contains nitrogen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 23 00:00:00 EDT 1996},
month = {Tue Jul 23 00:00:00 EDT 1996}
}

Patent:

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  • Silicon carbide/silicon nitride composites are prepared by carbothermal reduction of crystalline silica powder, carbon powder and optionally crystalline silicon nitride powder. The crystalline silicon carbide portion of the composite has a mean number diameter less than about 700 nanometers and contains nitrogen.
  • 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.
  • 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.
  • Silicon nitride-silicon carbide composite powders are prepared 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.
  • 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.