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Title: Joining of porous silicon carbide bodies

Abstract

A method of joining two porous bodies of silicon carbide is disclosed. It entails utilizing an aqueous slip of a similar silicon carbide as was used to form the porous bodies, including the sintering aids, and a binder to initially join the porous bodies together. Then the composite structure is subjected to cold isostatic pressing to form a joint having good handling strength. Then the composite structure is subjected to pressureless sintering to form the final strong bond. Optionally, after the sintering the structure is subjected to hot isostatic pressing to further improve the joint and densify the structure. The result is a composite structure in which the joint is almost indistinguishable from the silicon carbide pieces which it joins.

Inventors:
 [1];  [1];  [2]
  1. (Worcester, MA)
  2. (Thompson, CT)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
867359
Patent Number(s):
US 4921554
Application Number:
07/250,018
Assignee:
Norton Company (Worcester, MA) ORNL
DOE Contract Number:  
86X-SB045C
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
joining; porous; silicon; carbide; bodies; method; disclosed; entails; utilizing; aqueous; slip; similar; form; including; sintering; aids; binder; initially; join; composite; structure; subjected; cold; isostatic; pressing; joint; handling; strength; pressureless; final; strong; bond; optionally; hot; improve; densify; result; indistinguishable; pieces; joins; strong bond; composite structure; porous silicon; silicon carbide; hot isostatic; isostatic pressing; pressureless sintering; porous bodies; sintering aids; cold isostatic; carbide bodies; /156/419/

Citation Formats

Bates, Carl H., Couhig, John T., and Pelletier, Paul J. Joining of porous silicon carbide bodies. United States: N. p., 1990. Web.
Bates, Carl H., Couhig, John T., & Pelletier, Paul J. Joining of porous silicon carbide bodies. United States.
Bates, Carl H., Couhig, John T., and Pelletier, Paul J. Tue . "Joining of porous silicon carbide bodies". United States. https://www.osti.gov/servlets/purl/867359.
@article{osti_867359,
title = {Joining of porous silicon carbide bodies},
author = {Bates, Carl H. and Couhig, John T. and Pelletier, Paul J.},
abstractNote = {A method of joining two porous bodies of silicon carbide is disclosed. It entails utilizing an aqueous slip of a similar silicon carbide as was used to form the porous bodies, including the sintering aids, and a binder to initially join the porous bodies together. Then the composite structure is subjected to cold isostatic pressing to form a joint having good handling strength. Then the composite structure is subjected to pressureless sintering to form the final strong bond. Optionally, after the sintering the structure is subjected to hot isostatic pressing to further improve the joint and densify the structure. The result is a composite structure in which the joint is almost indistinguishable from the silicon carbide pieces which it joins.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 1990},
month = {Tue May 01 00:00:00 EDT 1990}
}

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