Shrinkage of porous glasses on heating from 20 to 800°C was studied and temperature dependences of the viscosity in the range of 1011–1013 P were determined for quartzoid (sintered) glasses based on five glasses with different compositions in the Na2O-B2O3-SiO2 system. The shrinkage of porous glasses and the viscosity of quartzoid glasses were analyzed in relation to their composition and temperature of preliminary thermal treatment.
Russian Journal of Applied Chemistry – Springer Journals
Published: Sep 5, 2008
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