Formation of antimony polyphosphate using Sb2O3 and/or (NH4)2HPO4 and NH4H 2PO4 as starting materials has been simulated by thermal analysis technique. The elimination of water and ammonia molecules induced by heating leads ...

Formation of antimony polyphosphate using Sb2O3 and/or (NH4)2HPO4 and NH4H 2PO4 as starting materials has been simulated by thermal analysis technique. The elimination of water and ammonia molecules induced by heating leads ...

The precipitation/replacement of Ca-phosphate is a complex process that commonly takes place during the early diagenesis in marine sediments. The unusual occurrence of shallow marine, early diagenetic phosphatic deposits ...

In this work, differential scanning calorimetry (DSC) was used to study effect of PbS impurity on crystallization mechanism of phosphate glasses. Bulk glasses presented one crystallization peak while powdered glasses ...

In this work, differential scanning calorimetry (DSC) was used to study effect of PbS impurity on crystallization mechanism of phosphate glasses. Bulk glasses presented one crystallization peak while powdered glasses ...

Vitreous samples were prepared in the binary system NaPO(3)-MoO(3) and their characteristic temperatures were determined by Differential Scanning Calorimetry. Glasses with high amounts of MoO(3) (>45 mol%) exhibit an intense ...

In this work, tantalum alkali-phosphate glasses were prepared in the ternary system 0.9[(100 - x) NaPO3 - xTa(2)O(5)] - 0.1K(2)O with x varying from 0 to 20. The thermal properties as a function of Ta2O5 content were ...

Oxyfluoride glasses with composition x WO3 - 30 NaPO3 - (70-x) NaF, with 30 ≤ x ≤ 70 were prepared by melt-quenching and characterized with respect to their bulk physical properties and ionic conductivities. As the NaF ...