氧化锆含量对锂铝硅微晶玻璃析晶及理化性能的影响  

Effect of Zirconia Content on Crystallization and Physicochemical Properties of Li-Al-Si Glass Ceramics

作　　者：田英良[1] 刘心浩 赵志永 韩金龙 TIAN Yingliang;LIU Xinhao;ZHAO Zhiyong;HAN Jinlong(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124

出　　处：《玻璃搪瓷与眼镜》2022年第8期8-15,共8页Glass Enamel & Ophthalmic Optics

基　　金：北京市教委科技计划一般项目(KM202210005008)。

摘　　要：以锂铝硅酸盐玻璃为研究对象,研究了不同氧化锆含量以及热处理工艺对微晶玻璃理化性能的影响。结果表明,当氧化锆摩尔含量从2.0%增加至3.5%时有利于细化晶粒,使微晶玻璃透过率从70%增加至85%,对玻璃维氏硬度和热膨胀系数影响不大,但会降低耐酸性且增强耐碱性;当氧化锆摩尔含量≥3.0%时,通过晶化处理可析出硅锂石和氧化锆纳米晶复合相,使微晶玻璃的维氏硬度从6.38 GPa逐渐增加至7.28 GPa,同时热膨胀系数受析出晶相影响逐渐增大,但会降低透过率和化学稳定性。The effects of different zirconia content and heat treatment process on the physical and chemical properties of lithium aluminum silicate glass were studied.Results show that when the value of zirconia(mol%)was increased from 2.0 to 3.5,it is beneficial to grain refinement,and the transmittance of glass ceramics increased from 70%to 85%.It had little effect on Vickers hardness and thermal expansion coefficient of glass,but decreased acid resistance and increased alkali resistance.When the zirconia(mol%)is more than 3.0,the composite crystalline phase of sillilaterite and zirconia nanocrystalline can be precipitated after crystallization,and the Vickers hardness of glass ceramics increased gradually from 6.38 GPa to 7.28 GPa.At the same time,the thermal expansion coefficient increased gradually under the influence of precipitated crystalline phase,but the transmittivity and chemical stability was reduced.

关 键 词：锂铝硅酸盐 维氏硬度 透明微晶玻璃 氧化锆 理化性能 

分 类 号：TQ171.11[化学工程—玻璃工业]