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Physical properties of new Sb2O3-V2O5-K2O glasses

Y. TAIBI1, M. POULAIN2,* , R. LEBULLENGER2, L. ATOUI1, M. LEGOUERA3

Affiliation

  1. Laboratoire de Métallurgie et Génie des Matériaux, Université de Annaba, 12 Sidi Amar Annaba, Algérie
  2. Sciences Chimiques, Université de Rennes 1, Campus Beaulieu, F-35042 Rennes, France
  3. Dept Mécanique, Université de Skikda, 21000 Algérie

Abstract

New heavy metal oxide glasses have been prepared and the compositional limits have been investigated in the Sb2O3-V2O5-K2O ternary system. Chemical composition of glass samples was checked by EDS analysis. The influence of the V2O5/Sb2O3 substitution on the physical properties of the (70-x) Sb2O3-xV2O5-30K2O glasses has been studied in the 0 < x < 40 range. Density decreases linearly from 4.3 g cm-3 to 3.4 g cm-3 as V2O5 replaces Sb2O3. However, the evolution of the physical properties such as glass transition temperature, elastic modulus, thermal expansion and microhardness is not monotonous. Tg increases for 0<x<5 , but it decreases for x>5 with a minimum value between 25% and 35% V2O5 . This unusual behavior suggests changes in the coordination number of the vanadium cations in relation to the network topology..

Keywords

Vanadate glass, Glass transition, Density, Elastic moduli, Thermal exposition, Microhardness.

Submitted at: Nov. 27, 2008
Accepted at: Jan. 29, 2009

Citation

Y. TAIBI, M. POULAIN, R. LEBULLENGER, L. ATOUI, M. LEGOUERA, Physical properties of new Sb2O3-V2O5-K2O glasses, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 1, pp. 34-40 (2009)