Journal of Materials Science

, Volume 45, Issue 11, pp 2916–2920

Microwave synthesis and physical characterization of tin(II) phosphate glasses

  • Nicolas Hémono
  • Sébastien Chenu
  • Ronan Lebullenger
  • Jean Rocherullé
  • Vincent Kéryvin
  • Alain Wattiaux
Article

DOI: 10.1007/s10853-010-4283-0

Cite this article as:
Hémono, N., Chenu, S., Lebullenger, R. et al. J Mater Sci (2010) 45: 2916. doi:10.1007/s10853-010-4283-0

Abstract

Tin phosphate glasses in the SnO–P2O5 binary diagram have been prepared by using a domestic microwave-heating device. Microwaves provide an extremely facile and automatically temperature-controlled route to the synthesis of glasses due to the specific dielectric properties of each chemical composition. Typical melting time is no longer than 10 min, limiting the oxidation of Sn2+ and the melt can be quenched into glass. The glass transition temperature increases with the SnO content confirming the depolymerization of the vitreous network, as expected by the relative fraction of the different Qn structural units deduced from NMR experiments. Concerning the mechanical properties, the Vickers hardness and the fracture toughness decrease while the thermal expansion coefficient and the different elastic moduli remain constants. These results confirm that those characteristics are not very sensible to structural considerations. On the contrary, the chemical durability of Sn2P2O7, determined from the weight loss method, is 300 times higher than that of Sn(PO3)2. Furthermore, Sn2P2O7 is the only glass composition that exhibits a devitrification phenomenon leading to the low-temperature phase of the crystalline tin(II) pyrophosphate.

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Nicolas Hémono
    • 1
  • Sébastien Chenu
    • 1
  • Ronan Lebullenger
    • 1
  • Jean Rocherullé
    • 1
  • Vincent Kéryvin
    • 2
  • Alain Wattiaux
    • 3
  1. 1.UMR CNRS 6226 Equipe Verres et Céramiques, Université de Rennes IRennesFrance
  2. 2.LARMAUR FRE CNRS 2717, Université de Rennes IRennesFrance
  3. 3.UPR CNRS 9048, ICMCB 86PessacFrance