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Effect of ZrO2 crystallization on ion exchange properties in aluminosilicate glass
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2020-01-03 , DOI: 10.1016/j.jeurceramsoc.2020.01.001
Yunlan Guo , Chao Liu , Jing Wang , Jian Ruan , Xiaoyun Li , Jianjun Han , Jun Xie

Ion exchange has the potential to improve the mechanical properties of glass ceramics. In this work, ZrO2 nanocrystals embedded transparent glass ceramics were prepared and effect of the crystallization on ion-exchange properties was investigated. The crystallization of ZrO2 did not affect the transmittance and Vickers hardness due to the small nanocrystal size and the low crystallinity, but significantly enhanced the ion exchange depth of layer (DOL). X-ray diffraction, high resolution transmission electron microscope, Raman spectra and nuclear magnetic resonance analysis demonstrated that with the crystallization of ZrO2, the charge compensator (Na+) was released, which promoted the transformation of highly coordinated Al into [AlO4] tetrahedral units and the formation of Na+ balanced non-bridging oxygens. These changes in structure of glass made the Na+ more mobile and increased the DOL upon the crystallization. Results reported here may be useful for the development of glass-ceramic materials suitable for chemical strengthening.



中文翻译:

ZrO 2结晶对铝硅酸盐玻璃离子交换性能的影响

离子交换具有改善玻璃陶瓷机械性能的潜力。在这项工作中,制备了ZrO 2纳米晶体嵌入的透明玻璃陶瓷,并研究了结晶对离子交换性能的影响。ZrO 2的结晶由于纳米晶尺寸小和结晶度低而不会影响透射率和维氏硬度,但会显着提高层的离子交换深度(DOL)。X射线衍射,高分辨率透射电子显微镜,拉曼光谱和核磁共振分析表明,随着ZrO 2的结晶,释放出电荷补偿剂(Na +),促进了高度配位的Al向[AlO]的转变。4 ] -四面体单元和Na +平衡的非桥连氧的形成。玻璃结构的这些变化使Na +更具流动性,并在结晶时增加了DOL。此处报道的结果可能对开发适用于化学强化的玻璃陶瓷材料有用。

更新日期:2020-01-03
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