FTIR spectral analysis and mechanical properties of sodium phosphate glass–ceramics
2014; Elsevier BV; Volume: 1083; Linguagem: Inglês
10.1016/j.molstruc.2014.11.027
ISSN1872-8014
AutoresParamjyot Kumar Jha, O. P. Pandey, K. Singh,
Tópico(s)Nuclear materials and radiation effects
ResumoGlasses of compositions xNa2O–(100 − x)P2O5, (40 ⩽ x ⩽ 55) were prepared by melt-quench technique. Controlled heat treatments of these glasses were done to obtain the glass–ceramics. Density of glass–ceramics increases with increasing content of Na2O. X-ray diffraction pattern exhibited two crystalline phases, i.e., NaPO3 and Na2H2P2O7 in all the glass–ceramic samples. FT-IR and Raman study revealed the de-polymerization of phosphate groups, that changes Q2 → Q1 → Q0 with Na2O content and heat treatment. The scanning electron microscope study confirmed that interlocked crystals are dispersed in a glassy matrix. The Young’s moduli of glass–ceramics are observed in the range of (17.3–21.5) GPa with the increase of Na2O content. The highest value of micro-hardness observed is 918 MPa in x = 55 mol% Na2O glass–ceramic sample. The observed elastic moduli of glass–ceramics are comparable to the other solid electrolyte which is being used in Na-ion batteries.
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