Glass Enamel & Ophtalmic Optics, Volume. 51, Issue 6, 7(2023)
The Effect of La2O3 and Y2O3 on Structure and Properties of Aluminosilicate Cover Glass
This work focuses on structure, viscosity, mechanical properties, and chemical strengthening properties of aluminosilicate glass with different amounts of La2O3 and Y2O3 for cover materials. It was found that the appropriate addition of La2O3 and Y2O3 can improve glass production adaptability, mechanical and chemical strengthening properties. According to the viscosity measurement, fining temperature of aluminosilicate glass decreases 6-20 ℃ when the total mole fraction of La3+ and Y3+ increased by 0.5%. The Young’s modules, shear modules and micro-Vickers hardness of aluminosilicate glass were increased with La2O3 and Y2O3 addition, and the maximum values are 84.33, 33.90 and 6.48 GPa with La3+ and Y3+ total mole fraction of 1.5%, respectively. The surface compressive stress (CS) of the glass after chemical strengthening first increases as large as 28% and then decreases with La2O3 and Y2O3 contents, and the depth of layer (DOL) remains unchanged at first and then increases with La2O3 and Y2O3 contents. Raman spectrum shows that when La3+ and Y3+ total mole fraction is in 0-1.5%, the non-bridging oxygen content is nearly unchanged. Within the range of 1.5%-2.5% of La3+ and Y3+ total mole fraction, the amounts of non-bridging oxygen increase with more La2O3 and Y2O3 content.
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MA He, LIANG Di, CAO Shengshuo, CHEN Xuemei, HU Querui, HU Bin, KUANG Bo. The Effect of La2O3 and Y2O3 on Structure and Properties of Aluminosilicate Cover Glass[J]. Glass Enamel & Ophtalmic Optics, 2023, 51(6): 7
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Received: Mar. 20, 2023
Accepted: --
Published Online: Nov. 22, 2023
The Author Email: MA He (smallcarmahe@foxmail.com)