Effect of ZrO2 crystallization on ion exchange properties in aluminosilicate glass |
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| Affiliation: | 1. College of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, PR China;2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, PR China;3. School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, PR China;1. Department of Industrial Engineering, University of Trento, Trento, Italy;2. Centre for Functional and Surface Functionalised Glass (FunGlass), Alexander Dubcek University of Trencin, Trencin, Slovakia;3. Department of Civil, Environmental & Mechanical Engineering, University of Trento, Trento, Italy;4. INSTM, Trento Research Unit, Florence, Italy;1. Surface du Verre et Interface (UMR 125), CNRS/Saint-Gobain Research Paris, 39 quai Lucien Lefranc, Aubervilliers, 93300, France;2. CNRS UMR7590, MNHN, IRD, Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Sorbonne Université, 4 place Jussieu, Paris, F-75005, France;3. L''orme des merisiers, Synchrotron SOLEIL, St Aubin BP48, Gif-sur-Yvette cedex, F-91192, France;4. Elettra – Sincrotrone Trieste, Basovizza, TS, 34149, Italy;5. CNRS CEMHTI-UPR3079, Univ. Orléans, Orléans, F-45071, France;1. Université Libre de Bruxelles, 4MAT Department, CP165/63, Avenue F. Roosevelt 50, B-1050 Brussels, Belgium;2. University of California at Davis, Dept. of Materials Science & Engineering, Davis, CA 95616, USA;3. AGC Glass Europe, Technovation Centre, Rue Louis Blériot 12, B-6041 Gosselies, Belgium |
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| Abstract: | 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. |
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| Keywords: | Glass-ceramic Ion exchange Nanocrystal Glass structure |
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