• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Properties of binary GeO_2-SiO_2 glasses
【24h】

Properties of binary GeO_2-SiO_2 glasses

机译：二元GeO_2-SiO_2玻璃的性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The density, refractive index, thermal expansion coefficient, and transformation range viscosity of binary GeO_2-SiO_2 glasses have been measured. Results indicate that the density and refractive index of these glasses are additive as a function of the molar composition of the glass. The thermal expansion coefficient of these glasses exhibits a slightly positive deviation from additivity. The transformation range viscosity, which is reported here for the first time for binary GeO_2-SiO_2 glasses, exhibits a strong negative deviation from additivity. These results can be explained by assuming that the structure of these glasses consists of a mixture, which may be either random or contain clusters, of Ge-O and Si-O tetrahedra and that viscous flow is controlled by breaking of Ge-O bonds. The compositional dependency of the viscosity is contrary to that expected for phase separated glasses.
机译：测量了二元GeO_2-SiO_2玻璃的密度，折射率，热膨胀系数和相变范围粘度。结果表明，这些玻璃的密度和折射率根据玻璃的摩尔组成而增加。这些玻璃的热膨胀系数与可加性略有正偏差。在此首次报道了二元GeO_2-SiO_2玻璃的转变范围粘度，它与可加性之间表现出很强的负偏差。这些结果可以通过假设这些玻璃的结构由Ge-O和Si-O四面体的混合物（可能是无规或包含簇）组成，并且通过破坏Ge-O键来控制粘性流动来解释。粘度的成分依赖性与相分离的玻璃所预期的相反。

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