Physical and elastic properties of B2o3-Bi2o3-Na2O glasses

Author: 
Ezhil Pavai, R and Thirumal, C

Glasses of the system: 60B 2 O 3 - ( 40-x )Bi 2 O 3 -xNa 2 O (where x= 0, 5, 10, 15 and 20 mol% ) have been prepared by melt quench technique. Longitudinal and shear velocities were measured using pulse echo technique. Density of the glass samples were measured by Archimedes principle using water as immersion liquid. Elastic moduli and some parameters uch as molar volume, Poisson’s ratio, acoustic impedance, microhardness, Debye emperature and thermal expansion co-efficient have been calculated from the measured data. Compositional dependence of the ultrasonic velocities and related parameters are discussed in he light of the rigidity and compactness of the glasses studied.

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