Abstract
The crystallization and structure of ZrO2-doped 36Fe2O3–10B2O3–54P2O5 glasses and crystalline compounds are studied by using X-ray diffraction and FTIR spectroscopy, respectively. It is found that the main crystallization is Fe4(PO4)2O, Fe2(PO4)O when 36Fe2O3–10B2O3–54P2O5 glass with less than 6mol% of ZrO2 is heated at 850°C. When the doped ZrO2 is larger than 6mol% (including 6mol%), ZrP2O7 crystallization appear. Furthermore, their crystallization behaviors suggest that ZrO2 can promote ZrP2O7 crystallized from the ZrO2-doped 36Fe2O3–10B2O3–54P2O5 glass and restrain Fe4(PO4)2O and Fe2(PO4)O crystallization formed due to the PO3− groups and PO43− phosphate groups gradually transforming into pyrophosphate P2O74− groups with increasing content of ZrO2. The knowledge provides an improved understanding of the role of Zr in the structure of iron borophosphate glasses and its crystalline compounds.
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