Crystallization, structure and characterization of MgO-Al2O3-SiO2-P2O5 transparent glass-ceramics with high crystallinity
Crystallization, structure and characterization of MgO-Al2O3-SiO2-P2O5 transparent glass-ceramics with high crystallinity
复制标题
高结晶度MgO-Al2O3-SiO2-P2O5透明微晶玻璃的结晶、结构及表征
DOI：
10.1016/j.jnoncrysol.2017.10.028
复制
发表时间：
2018-02
影响因子：
3.5
通讯作者：
Anxian Lu
中科院分区：
文献类型：
--
作者：
Lei Han;Jun Song;Qian Zhang;Zhiwei Luo;Anxian Lu
采用常规熔融淬火和“两步”晶化方法制备了基于MgO-Al2O3-SiO2-P2O5体系的高结晶度透明微晶玻璃。研究了微晶玻璃的结晶动力学、相演化、结构、物理和透光性能。结果表明，这种玻璃的结晶机制被认为是三维界面生长。这些微晶玻璃中的主要晶相为Mg2Al4Si5O18，且随着晶化温度和时间的升高，晶相含量升高，导致微晶玻璃的透光率降低。从EDS元素分布图可以看出，微晶玻璃中主要元素分布均匀。综合考虑，母体玻璃的最佳热处理工艺为840℃/36h+1050℃/3h，所制备的微晶玻璃具有高结晶度（90.5vol%）、良好的透光率（85%）和优良的力学性能和热性能。这些发现使得该系列透明微晶玻璃在固态光学功能材料中显示出潜在的应用前景。
Highly crystallinity transparent glass-ceramics based on MgO-Al2O3-SiO2-P2O5system have been prepared by conventional melt-quenching and “two-step” crystallization method. The crystallization kinetics, phase evolution, structure, physical and light transmittance properties of glass-ceramics were studied. The results reveal that the crystallization mechanism of this glass is believed to be three-dimensional interfacial growth. The predominant crystalline phase is Mg2Al4Si5O18in these glass-ceramics, and the content of crystalline phase becomes higher with rising of crystallization temperature and time, which the light transmittance of glass-ceramics decreases. It is observed that the main elements are uniformly distributed in glass-ceramics from EDS element distribution maps. All things considered, the optimal heat treatment schedule of parent glass is 840 °C/36 h + 1050 °C/3 h, the prepared glass-ceramics possesses high crystallinity (90.5 vol%), good light transmittance (85%) and excellent mechanical and thermal properties. These findings make this family of transparent glass-ceramics showing potential applications in solid-state optical functional material.
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