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浙江大学学报(工学版)
浙江大学学报(工学版)  2021, Vol. 55 Issue (5): 984-990    DOI: 10.3785/j.issn.1008-973X.2021.05.019
材料与化学工程     
基于纳米压痕技术的电子玻璃微观力学性能研究
赵亚贤1(),马晔城1,程子强1,曹欣2,刘涌1,*(),韩高荣1
1. 浙江大学 材料科学与工程学院，硅材料国家重点实验室，浙江 杭州 310027
2. 蚌埠玻璃工业设计研究院有限公司，安徽 蚌埠 233018
Micromechanical properties of electronic glass using nanoindentation technology
Ya-xian ZHAO1(),Ye-cheng MA1,Zi-qiang CHENG1,Xin CAO2,Yong LIU1,*(),Gao-rong HAN1
1. School of Material Science and Engineering, State Key Laboratory of Silicon Material Science, Hangzhou 310027, China
2. Bengbu Design and Research Institute for Glass Industry Co. Ltd, Bengbu 233018, China
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摘要：

为了研究不同电子玻璃的微观力学性能，采用先进的纳米压痕技术记录钠钙硅、无碱硼铝硅和碱铝硅等典型电子玻璃的载荷-位移曲线，利用Oliver-Pharr方法和经典的弹塑性变形理论，计算玻璃的硬度和弹性模量. 玻璃的硬度主要与结构的键合度相关，平均非桥氧数越高，外力作用下越容易致密化，硬度越小；弹性模量主要取决于质点间的化学键强度，化学键力越强，变形越小，弹性模量越大；九点法测得的弹性模量与硬度的变化趋势不完全相同，借助硬度-弹性模量-能量耗散之间的本征关系，评价玻璃样品的微观均匀性，其中无碱硼铝硅玻璃的恢复阻力大，局部能量耗散大，不容易引起整体破坏，力学性能最好；与浮法工艺相比，溢流下拉法制备样品的局部力学性能波动较小，微观均匀性较好.
关键词： 纳米压痕技术;  硬度;  弹性模量;  能量耗散;  微观均匀性    
Abstract:

Advanced nanoindentation technology was used to record load-displacement curves of typical electronic glasses, including soda lime silicate, alkali-free boroaluminosilicate and alkali aluminosilicate glasses, in order to study the microscopic mechanical properties of different electronic glasses. Hardness and elastic modulus were calculated using the Oliver-Pharr method and elastoplastic deformation theory. The hardness of glass is mainly related to the bonding degree of glass structure. The higher the average number of non-bridging oxygen, the easier it is to densify under stress, thus the lower the hardness. The elastic modulus mainly depends on the strength of chemical bond between particles. Stronger chemical bond leads to smaller deformation and larger elastic modulus. Different trends were observed for the elastic modulus and the hardness measured by the nine-point method. Microscopic uniformity of the glass samples has been evaluated based on the intrinsic relationship between hardness, elastic modulus and energy dissipation. Results showed that the alkali-free boroaluminosilicate glass had the best mechanical properties with high recovery resistance and local energy dissipation, making it not easy to cause overall damage. Samples prepared by overflow down-draw process showed less fluctuations in the local mechanical properties and got better micromechanical uniformity compared with samples prepared by float process.
Key words: nanoindentation technology    hardness    elastic modulus    energy dissipation    microscopic uniformity
收稿日期: 2020-03-20 出版日期: 2021-06-10
CLC:  TQ 171.71  
基金资助: “十三五”国家重点研发计划资助项目（2016YFB0303700）；国家自然科学基金资助项目（U1809217，51672242）；浮法玻璃新技术国家重点实验室开放课题基金资助项目
通讯作者: 刘涌     E-mail: 3130104409@zju.edu.cn;liuyong.mse@zju.edu.cn
作者简介: 赵亚贤（1994—），女，博士生，从事玻璃结构数值模拟研究. orcid.org/0000-0002-7071-6253. E-mail： 3130104409@zju.edu.cn
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引用本文:

赵亚贤,马晔城,程子强,曹欣,刘涌,韩高荣. 基于纳米压痕技术的电子玻璃微观力学性能研究[J]. 浙江大学学报(工学版), 2021, 55(5): 984-990.

Ya-xian ZHAO,Ye-cheng MA,Zi-qiang CHENG,Xin CAO,Yong LIU,Gao-rong HAN. Micromechanical properties of electronic glass using nanoindentation technology. Journal of ZheJiang University (Engineering Science), 2021, 55(5): 984-990.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2021.05.019    或    http://www.zjujournals.com/eng/CN/Y2021/V55/I5/984

电子玻璃种类 工艺 厚度/mm 编号
钠钙硅玻璃 浮法 1.10 S1
无碱硼铝硅玻璃 溢流下拉法 0.30 S2
无碱硼铝硅玻璃 浮法 0.33 S3
碱铝硅玻璃 溢流下拉法 0.40 S4
表 1  电子玻璃种类、工艺及厚度
图 1  纳米压痕仪施加在玻璃表面的载荷-位移曲线
图 2  纳米压痕测试的测试点阵
图 3  电子玻璃样品的硬度以及S4的光学显微印痕
%
种类 编号 r
（SiO2） 		r
（Al2O3） 		r
（B2O3） 		r
（Na2O+K2O） 		r
（CaO+MgO）
钠钙硅 S1 71.67 0.94 ? 13.24 14.15
无碱硼铝硅 S2 68.21 10.78 9.87 ? 11.14
无碱硼铝硅 S3 68.78 11.62 8.01 ? 11.59
碱铝硅 S4 64.94 10.34 0.09 15.78 8.85
表 2  实验玻璃样品的化学组成
图 4  实验玻璃样品的键合度以及平均桥氧和非桥氧数
图 5  电子玻璃的弹性模量
图 6  电子玻璃在不同测试点的弹性模量与硬度
图 7  2种工艺制备玻璃样品的恢复阻力
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