Sol-gel method for making composite mullite/cordierite ceramics
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 1991
Grant Date -
N/A
app pub date -
Aug 30, 1990
filing date -
Aug 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for making composite mullite/cordierite ceramics comprises the steps of: preparing a mullite-intensive sol by mixing alumina and silica sols together at an Al.sub.2 O.sub.3 /SiO.sub.2 molar ratio of 1.37-1.76, preparing a cordierite-intensive sol by mixing alumina, silica and magnesia sols together, gelating a mixture of the mullite- and cordierite-intensive sols obtained at a weight ratio of 80:20-20:80 calcinating the thus obtained gel at 1200.degree.-1400.degree. C., and compacting and sintering the thus calcinated material at 1300.degree.-1450.degree. C.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully