Effect of ZrO2/P2O5 Nucleating Agent on the Microcrystallization and Mechanical Properties of LiO2-Al2O3-SiO2 Glass
In order to improve the performance of LiO2-Al2O3-SiO2 system glass,this paper adopts the melting method to prepare LiO2-Al2O3-SiO2 glass with ZrO2/P2O5 multi-nucleation agent.The influence of different nucleating agents on the microcrystallization and mechanical properties of LiO2-Al2O3-SiO2 system glass were studied by scanning electron microscopy(SEM),differential thermal analysis(DSC)and X-ray diffraction(XRD).The studies have shown that the use of multi-nucleating agent in glass can reduce the activation energy of crystallization,promote crystallization,increase bending strength,and increase the glass visible light transmittance by more than 80％.The crystal grain size of the multi-nucleating agent samples is less than 100 nm,the grain structure is finer,and the nucleation efficiency is higher.The transmittance,hardness and flexural strength of glass-ceramics with composite nucleation agent are 85,4％,521 HV,and 79.37 MPa,respectively,which are better than single nucleation agent glass.
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