Method for preparing Pb-.beta."-alumina ceramic

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865828

Hellstrom, Eric E ^[1]

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1. Albuquerque, NM

A process is disclosed for preparing impermeable, polycrystalline samples of Pb-.beta."-alumina ceramic from Na-.beta."-alumina ceramic by ion exchange. The process comprises two steps. The first step is a high-temperature vapor phase exchange of Na by K, followed by substitution of Pb for K by immersing the sample in a molten Pb salt bath. The result is a polycrystalline Pb-.beta."-alumina ceramic that is substantially crack-free.

• Research Organization: AT&T
• DOE Contract Number: AC04-76DP00789
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4585635
• OSTI ID: 865828
• Country of Publication: United States
• Language: English

Related Subjects

method
preparing
pb-
beta
-alumina
ceramic
process
disclosed
impermeable
polycrystalline
samples
na-
exchange
comprises
steps
step
high-temperature
vapor
phase
na
followed
substitution
pb
immersing
sample
molten
salt
bath
result
substantially
crack-free
salt bath
process comprises
vapor phase
alumina ceramic
-alumina ceramic
/423/