Abstract

The lack of a supply of domestic quartz suitable for piezoelectric applications has stimulated interest in methods of synthesis.

The system H2O-SiO2-Na2O was chosen for investigation. Data are presented giving the solubility of quartz in sodium hydroxide solutions from 1% to 13% Na2O at temperatures from 250° to 450° C. The solubility rate and rate of quartz growth from these solutions was determined. The large growth rate led to successful attempts at laboratory synthesis. A discussion is given of several growth techniques.

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