Sintering of beta-type alumina bodies using alpha-alumina encapsulation

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:863865

McEntire, Bryan J ^[1]; Virkar, Anil V ^[2]

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1. Salt Lake City, UT
2. Midvale, UT

A method of sintering a shaped green, beta-type alumina body comprising: (A) inserting said body into an open chamber prepared by exposing the interior surface of a container consisting essentially of at least about 50 weight percent of alpha-alumina and a remainder of other refractory material to a sodium oxide or sodium oxide producing environment; (B) sealing the chamber; and heating the chamber with the shaped body encapsulated therein to a temperature and for a time necessary to sinter said body to the desired density. The encapsulation chamber prepared as described above is also claimed.

• Research Organization: Ford Motor Company, Detroit, MI (United States)
• DOE Contract Number: EY-76-C-02-2566
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4263381
• OSTI ID: 863865
• Country of Publication: United States
• Language: English

Related Subjects

sintering
beta-type
alumina
bodies
alpha-alumina
encapsulation
method
shaped
green
comprising
inserting
chamber
prepared
exposing
interior
surface
container
consisting
essentially
50
weight
percent
remainder
refractory
material
sodium
oxide
producing
environment
sealing
heating
encapsulated
therein
temperature
time
sinter
desired
density
described
claimed
refractory material
consisting essentially
weight percent
interior surface
sodium oxide
desired density
encapsulated therein
beta-type alumina
/429/264/