首页> 外文期刊>Materials Chemistry and Physics >Quantitative analysis of ultrasonic attenuation in TiO2-doped CaO-Al2O3-B2O3 glasses
【24h】

Quantitative analysis of ultrasonic attenuation in TiO2-doped CaO-Al2O3-B2O3 glasses

机译:TiO2掺杂CaO-Al2O3-B2O3玻璃中超声衰减的定量分析

获取原文
获取原文并翻译 | 示例
           

摘要

A comprehensive quantitative analysis of the composition dependence of ultrasonic attenuation in TiO2-doped 30CaO-30Al(2)O(3)-40B(2)O(3) glasses was achieved according to the central force theory and ring deformation model. Empirical formulas relating ultrasonic attenuation at room temperature and 4 MHz frequency with a number of physical and structural parameters, such as the bulk modulus, oxygen density, average first order stretching force constant and atomic ring size of the network, number of loss centers, i.e. double-well systems (oxygen atoms vibrating in asymmetric double-well potentials) and the barrier height of the asymmetric double-well potential are reported. The good agreement between the observed and theoretically calculated values of bulk modulus evidences the validity of the derived empirical equations for the studied glasses. (c) 2005 Elsevier B.V. All rights reserved.
机译:根据中心力理论和环变形模型,对TiO2掺杂的30CaO-30Al(2)O(3)-40B(2)O(3)玻璃中的超声衰减的成分依赖性进行了全面的定量分析。经验公式将室温和4 MHz频率下的超声波衰减与许多物理和结构参数相关,例如体积模量,氧气密度,平均一阶拉伸力常数和网络的原子环尺寸,损耗中心数,即报告了双阱系统(氧原子在不对称双阱电势中振动)和不对称双阱电势的势垒高度。体积模量的观察值与理论计算值之间的良好一致性证明了所研究玻璃的经验公式的有效性。 (c)2005 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号