Effects of MO (M = Mg, Ca, Ba) on crystallization and flexural strength of semi-transparent lithium disilicate glass-ceramics
作者： Zhiwei Luo , Junlin Zhou , Jing Li , Changjian Zhang , Anxian Lu
DOI: 10.1007/S12034-011-0352-5
关键词:
摘要: In this study, semitransparent lithium disilicate glass-ceramics in the Li2O-K2O-Al2O3-Y2O3-La2O3-SiO2 system was investigated by incorporation of P2O5 as nucleation agent and alkaline earth oxides additive. The influence on structure glasses network, crystalline phases, microstructure mechanical properties were means Raman spectra, differential scanning calorimetry (DSC), X-ray diffractometry (XRD) electron microscopy (SEM). strength measured corresponding to norm ISO 6872. spectra predominantly showed that small additions not only form asymmetrical vibrations M-Si-O bonds, but also enhance intensities symmetrical P-O making glass network more stable. And CaO or BaO has crystallization behaviour, phase, than addition MgO. enhanced first exothermic peak temperature decreased flexural glass-ceramics.
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