Effect of boron oxide on the structure and properties of Li2O‐Al2O3‐SiO2 transparent glass‐ceramics

IF 2.1 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Glass Science Pub Date : 2024-09-03 DOI:10.1111/ijag.16687

Chenxi Jiang, Yanhang Wang, Hanzhen Zhu, Qilong Liao, Fu Wang

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Abstract

Transparent lithium aluminum silicon glass‐ceramics are prepared via heat treatment and the effect of boron oxide (B2O3) content on the structure and properties of Li2O‐Al2O3‐SiO2 glass‐ceramics is investigated. The X‐ray photoelectron spectroscopy results reveal that the parent glass containing B2O3 exhibits a higher concentration of bridging oxygen (BO). With an increase in B2O3 content, the relative amount of BO changes from 76.64% to 79.86% and then to 79.52%. Simultaneously, the second crystallization peak temperature TP2 of the samples increases from 715°C to 720°C and then to 724°C by differential scanning calorimeter analysis. The X‐ray diffractometer and scanning electron microscope results indicate that the addition of B2O3 facilitates grain growth, while an increase in B2O3 substitution for Al2O3 hinders the precipitation of LiAlSi4O10 but promotes quartz formation. The glass containing 2 wt% B2O3 with the heat treatment of 560°C/ 4 h+ 680°C/2 h shows a Vickers Hardness value of approximately 7.75 GPa, and a transmittance at 550 nm reaching ∼85%.

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氧化硼对 Li2O-Al2O3-SiO2 透明玻璃陶瓷结构和性能的影响

通过热处理制备了透明的锂铝硅玻璃陶瓷，并研究了氧化硼（B2O3）含量对 Li2O-Al2O3-SiO2 玻璃陶瓷结构和性能的影响。X 射线光电子能谱结果表明，含有 B2O3 的母玻璃中桥接氧 (BO) 的浓度较高。随着 B2O3 含量的增加，BO 的相对含量从 76.64% 变为 79.86%，然后又变为 79.52%。同时，通过差示扫描量热仪分析，样品的第二结晶峰温度 TP2 从 715°C 上升到 720°C，然后又上升到 724°C。X 射线衍射仪和扫描电子显微镜的结果表明，添加 B2O3 有利于晶粒的生长，而增加 B2O3 对 Al2O3 的替代会阻碍 LiAlSi4O10 的析出，但会促进石英的形成。含有 2 wt% B2O3 的玻璃经过 560°C/ 4 h+ 680°C/2 h 的热处理后，维氏硬度值约为 7.75 GPa，在 550 nm 波长处的透射率达到 ∼ 85%。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.

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