The Volatilisation of Lithium Oxide at High Temperatures from Lithium Oxide–Silica Glasses

JSGT 1934 V18 T143-T169

The glasses were pure, ranging in composition from 10·12 to 50·09% Li₂O (18 to 66 mol%), and were characterised by a strong tendency towards devitrification. Under the experimental conditions employed, the range of volatilisation losses during the first 20 hours of heating in each case was (in mg/cm²): at 1400°, 2·25–120; at 13000, 0·6–46; at 1200°, 0·15–5·3. At 1100°, owing to crystallisation in all others, measurements were only possible with glasses containing 20·53 and 22·88% Li₂O. The temperature–volatility relationships approximated to a vapour-pressure law.

Eric Preston & W. E. S. Turner