Joining of porous silicon carbide bodies

Patent · Tue May 01 00:00:00 EDT 1990

OSTI ID:867359

Bates, Carl H ^[1]; Couhig, John T ^[1]; Pelletier, Paul J ^[2]

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1. Worcester, MA
2. Thompson, CT

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: 86X-SB045C
• Assignee: Norton Company (Worcester, MA)
• Patent Number(s): US 4921554
• Application Number: 07/250,018
• OSTI ID: 867359
• Country of Publication: United States
• Language: English

Related Subjects

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/