Impact of pressure on the structure of glass and its material properties
Impact of pressure on the structure of glass and its material properties
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压力对玻璃结构及其材料性能的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Liping Huang
中科院分区：
文献类型：
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作者：
P. Salmon;Liping Huang
高压对玻璃的结构相关性质具有显著影响，并且在从断裂力学（其中通过尖锐接触加载容易产生吉帕斯卡范围内的应力）到具有调谐物理特性的永久致密材料的制造的范围内的情形中遇到。在这里，我们考虑压力引起的结构变化，发生在玻璃和显示，氧化物材料，氧包装分数起着关键作用，在确定这些变化可能发生时。五配位的Si原子在石英玻璃的压力诱导变形中作为重要的中间体出现。
High pressures have a significant impact on the structure-related properties of glass and are encountered in scenarios ranging from fracture mechanics, where stresses in the gigapascal regime are easily generated by sharp-contact loading, to the manufacture of permanently densified materials with tuned physical characteristics. Here, we consider pressure-induced structural changes that occur in glass and show that, for oxide materials, the oxygen-packing fraction plays a key role in determining when these changes are likely to occur. Fivefold coordinated Si atoms appear as important intermediaries in the pressure-induced deformation of silica glass.