Abstract
Thermal properties and crystallization of glasses from PbO–MoO3–P2O5 ternary system were studied in three compositional series (100 − x)[0.5PbO–0.5P2O5]–xMoO3 (A), 50PbO–yMoO3–(50 − y)P2O5 (B), and (50 − z)PbO–zMoO3–50P2O5 (C). Glass transition temperature, crystallization temperature, coefficient of thermal expansion, and dilatation softening temperature of the studied glasses were determined by differential thermal analysis and dilatometry. Crystallization products of annealed glass samples were investigated by X-ray diffraction and Raman spectroscopy. X-ray diffraction analysis of crystallized glasses revealed the formation of PbP2O6, Pb3P4O13, and PbMoO4 in the samples of the B series. In the series A and C in the samples with a high MoO3 content, crystalline compounds of Pb(MoO2)2(PO4)2 and (MoO2)(PO3)2, respectively, were identified. Raman spectra of crystalline samples confirmed the results of X-ray diffraction measurements and provided also information on thermal stability of glasses and formation of glass-crystalline phases in the studied glass series.
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Acknowledgements
The authors are grateful for the financial support from the research project No. P106/10/0283 of the Grant Agency of Czech Republic and from the research project No. 0021627501 of the Ministry of Education of Czech Republic.
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Rösslerová, I., Koudelka, L., Černošek, Z. et al. Thermal properties and crystallization of PbO–MoO3–P2O5 glasses. J Mater Sci 46, 6751–6757 (2011). https://doi.org/10.1007/s10853-011-5631-4
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DOI: https://doi.org/10.1007/s10853-011-5631-4