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Calculated Vs Measured Viscosities of Sol-Gel Processed Silica

Published online by Cambridge University Press:  28 February 2011

T. A. Gallo  and
L. C. Klein
T. A. Gallo
Affiliation:
Rutgers - The State University of New Jersey, Ceramics Department, P.O. Box 909, Piscataway, N.J. 08854
L. C. Klein
Affiliation:
Rutgers - The State University of New Jersey, Ceramics Department, P.O. Box 909, Piscataway, N.J. 08854
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Abstract

The densification of sol-gel processed silica was studied by comparing calculated and measured viscosities between 700 and 850°C. Linear shrinkage was measured in a dilatometer. From shrinkage data, relative bulk densities were determined. The densities were used in a model for viscous sintering to calculate viscosities. Beam-bending viscosimetry was used to determine viscosities directly. The deflection rate of a centrally loaded beam was measured. Both the calculated and measured viscosities had the same time dependence. The temperature dependence was also determined.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 245
Copyright
Copyright © Materials Research Society 1986

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References

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