Thermochemistry of vitreous antimony orthophosphate

  • P. Melnikov
  • M. A. C. Secco
  • W. R. Guimarães
  • H. W. L. dos Santos
Regular Papers Organics/Polymers


A vitreous form of antimony orthophosphate has been obtained using antimony polyphosphate as a precursor. Morphologically, it is composed of small uniform grains having ellipsoidal shapes. Prolonged thermal treatment leads to the transformation into a crystalline variety. According to TG curves, both forms start to evaporate at 920°C without decomposition. Melting point of crystalline SbPO4 has been determined to be 877°C. Thermomechanical study reveals plastic behavior due to the capacity to flow under shearing stress. Ceramics formation in the system Sb2O3-SbPO4 is discussed. The presence of glass domains in this system has not been confirmed.


antimony orthophosphate glasses inorganic materials 


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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • P. Melnikov
    • 1
  • M. A. C. Secco
    • 1
  • W. R. Guimarães
    • 1
  • H. W. L. dos Santos
    • 1
  1. 1.Physics Department/CCET/UFMSCampo Grande/MSBrazil

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