New interaction potentials for alkaline earth silicate and borate glasses
New interaction potentials for alkaline earth silicate and borate glasses
复制标题
碱土硅酸盐和硼酸盐玻璃的新相互作用势
DOI:
10.1016/j.jnoncrysol.2021.120853
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发表时间:
2021
影响因子:
3.5
通讯作者:
Huang, Liping
中科院分区:
文献类型:
--
作者:
Shih, Yueh-Ting;Sundararaman, Siddharth;Ispas, Simona;Huang, Liping
New interaction potentials were developed for molecular dynamics simulations to study the role of Mg and Ca in modifying the structure and properties of alkaline earth silicates and borates. Competition between the depolymerization of the silica network and the formation of new bonds between oxygen atoms and modifiers leads to the enhancement of the elastic moduli with increasing modifier content in alkaline earth silicate glasses. Compared with calcium silicate, the higher elastic moduli of magnesium silicate result from a higher connectivity of the overall glass network due to the incorporation of fourfold coordinated magnesium and a more rigid connection between oxygen atoms and modifiers. In contrast to the silicates, the effect of modifier on the elastic moduli of alkaline earth borates is dominated by the formation of fourfold coordinated boron (N4). Calcium borate with higherN4shows a more rigid network structure and higher elastic moduli.
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作者:
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DOI:
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1994
期刊:
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2009
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DOI:
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1992
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