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Sol-Gel Film Formation by Dip Coating

Published online by Cambridge University Press:  28 February 2011

Alan J. Hurd  and
C. Jeffrey Brinker
Alan J. Hurd
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–5800
C. Jeffrey Brinker
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185–5800
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Abstract

The physical aspects of sol-gel film formation are discussed, including the steady state film profile during dip coating, evaporation, and capillary phenomena. It is argued that, since the evaporation rate increases singularly near a sharp boundary (analogous to an electric field singularity near a sharp conductor), the film profile near the drying line falls off precipitously, following the inverse form of the evaporation singularity. Finally, the large tensile pressures in the solvent during the final stage of drying of a porous film are discussed from the point of view of controlling the degree of capillary collapse.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 575
Copyright
Copyright © Materials Research Society 1990

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References

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