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Synthesis and Processing of the Sol-Gel Derived β-Quartz Lithium Aluminum Silicates

Published online by Cambridge University Press:  28 February 2011

J. Covino ,
F. G. A. De Laat  and
R. A. Welsbie
J. Covino
Affiliation:
Engineering Sciences Division, Research Department, Naval Weapons Center, China Lake, CA 93555-6001
F. G. A. De Laat
Affiliation:
Litton Guidance and Control Systems, 5500 Canoga Avenue, Woodland Hills, CA 91365
R. A. Welsbie
Affiliation:
Litton Guidance and Control Systems, 5500 Canoga Avenue, Woodland Hills, CA 91365
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Abstract

Lithium Aluminum Silicate (LAS) glass-ceramic compositions with and without phosphorous have been synthesized by Sol-Gel techniques. Resulting LAStype powders are herein designated as NZ and NZP. X-Ray analysis, thermogravimetric analysis (TGA), particle size measurements, and thermal dilatometric shrinkage measurements have been performed on these samples. The NZ and NZP powders in calcined form, as well as commercially-available LAS glass-ceramic produce x-ray diffraction pattern very similar to the pattern of Virgilite LixAlxSi3−xO6 (x=0.5–1.0). There is little difference between powders with and without phosphorous in the diffuse reflectance spectra (DRS). Preliminary results show that the material can be easily processed into glass ceramics.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 135
Copyright
Copyright © Materials Research Society 1986

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References

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