alumina membranes by slip casting
alumina membranes by slip casting
(OP)
Does anyone knows what is the right dispersant for alumina?
I'm having difficulties while casting my slip (my slip is not dispersed). I'm using composition of alumina, kaolin, and quartz.
My aim is to obtain a thin cylindrical membrane, so I also have a problem with the heating rate because my membranes always cracks.
I choose slip casting because my lab doesn't have modern equipment for techniques such as CVD or solgel.
I'm having difficulties while casting my slip (my slip is not dispersed). I'm using composition of alumina, kaolin, and quartz.
My aim is to obtain a thin cylindrical membrane, so I also have a problem with the heating rate because my membranes always cracks.
I choose slip casting because my lab doesn't have modern equipment for techniques such as CVD or solgel.





RE: alumina membranes by slip casting
membrane,perhaps anodising an aluminium tube
heavily,then dissolving the xs aluminium away might be
an approach for low-temperature applications (the
anodising produces a layer of Boehmite Al(OH)O ,
which is not high temperature stable).
RE: alumina membranes by slip casting
Problem: We are observing cracks at drying stage. We have tried at least 50 such pieces with minor modifications in slip, in oven, in compositions etc, but not successful. Can somebody suggests some solution in this regard.
L. N. Satapathy
lnsatapathy@vsnl.com