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首页> 外文会议>Processing, properties, and applications of glass and optical materials. >THE ROLE OF CHEMICAL COMPOSITION AND MEAN COORDINATION NUMBER IN Ge-As-Se TERNARY GLASSES
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THE ROLE OF CHEMICAL COMPOSITION AND MEAN COORDINATION NUMBER IN Ge-As-Se TERNARY GLASSES

机译：化学组成和平均配位数在Ge-As-Se三元玻璃中的作用

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摘要

We prepared a series of Ge-As-Se glasses with different chemical compositions and mean coordination numbers (MCN) from 2.2 to 2.94. We further measured their physical properties in order to understand the effect of MCN and chemical compositions on the physical properties of the glasses. It was found that, while glass transition temperatures, T_g, in the glasses with stoichiometrie compositions generally increase linearly with increasing MCN, they depart from the linear behaviour in the glasses with high MCN >2.6 and low MCN<2.4. The fluctuation of T_g is less than 5% in the glasses with the same MCN of 2.5 but different chemical compositions. On the other hand, the density and elastic moduli of the glasses show two transition thresholds at MCN=2.45 and 2.65, respectively. The glasses with the same MCN of 2.5 but different chemical compositions show a change of 3% in density and 5% in elastic moduli, respectively. All these results suggest that, in a region from MCN=2.4 to 2.55, MCN could be a primary factor to determine the physical properties of the ternary glasses.
机译：我们准备了一系列具有不同化学成分和平均配位数（MCN）从2.2至2.94的Ge-As-Se玻璃。我们进一步测量了它们的物理性能，以了解MCN和化学成分对眼镜物理性能的影响。已经发现，尽管具有化学计量组成的玻璃中的玻璃化转变温度T_g通常随着MCN的增加而线性增加，但是它们偏离了MCN＞ 2.6且MCN ＜2.4低的玻璃中的线性行为。在相同的MCN为2.5，但化学成分不同的情况下，玻璃的T_g波动小于5％。另一方面，玻璃的密度和弹性模量分别在MCN = 2.45和2.65处显示两个过渡阈值。 MCN等于2.5但化学成分不同的玻璃的密度变化分别为3％和5％。所有这些结果表明，在MCN = 2.4至2.55的区域中，MCN可能是决定三元玻璃物理性质的主要因素。

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  • 会议地点 Cairns(AU);Cairns(AU);Cairns(AU);Cairns(AU)
  • 作者

    Rong-Ping Wang; Duk Yong Choi; Steve Madden; Harry Lulhcr-Davics;

  • 作者单位

    Centre for Ultrahigh-bandwidth Devices for Optical Systems, Laser Physics Centre The Australian National University Canberra, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems, Laser Physics Centre The Australian National University Canberra, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems, Laser Physics Centre The Australian National University Canberra, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems, Laser Physics Centre The Australian National University Canberra, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 玻璃工业;玻璃工业;
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