Viscoelastic behavior of alkali and alkaline earth aluminophosphate glasses

Viscoelastic behavior of alkali and alkaline earth aluminophosphate glasses
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碱金属和碱土金属铝磷酸盐玻璃的粘弹性行为

DOI:
10.1016/j.jnoncrysol.2020.120441
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发表时间:
2021
影响因子:
3.5
通讯作者:
Kozuka Hiromitsu
Kozuka Hiromitsu
中科院分区:
材料科学2区
文献类型:
--
作者:
Kitamura Naoyuki;Hayashido Takahiko;Matsushita Nana;Fukumi Kohei;Uchiyama Hiroaki;Kozuka Hiromitsu

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研究了碱土和碱土磷酸铝玻璃的粘弹性。能量解释是基于弛豫模量的阿伦尼乌斯行为。随着铝含量的增加,碱土系弛豫活化能增大,碱土系弛豫活化能减小。动态粘弹性测量表明,损耗模量E ' ' (ω)在玻璃化转变温度下显示了弛豫过程的交叉。转变温度以下的活化能接近于内摩擦能或离子自扩散能。高于转变温度的能量对应于碱-氧或碱土-氧单键的解离能。碱土系和碱土系弛豫模量的能量差异是由于碱土离子的加入引起弱键和碱土离子的存在导致低配位铝多面体形成交联所致。
The viscoelastic behavior of alkali and alkaline earth aluminophosphate glasses was studied. The energetic interpretation was based on the Arrhenius behavior of the relaxation modulus. With increasing aluminum content, the activation energy of the relaxation increased in the alkali series but decreased in the alkaline earth series. Dynamic viscoelasticity measurements revealed that the loss modulus,E”(ω), showed a crossover of the relaxation process at the glass transition temperatures. The activation energy below the transition temperature was close to the energies of internal friction or ionic self-diffusion. The energy above the transition temperature corresponded to the dissociation energies of alkali-oxygen or alkaline earth-oxygen single bonds. The different behavior in the energy of the relaxation modulus between alkali and alkaline earth series was due to weak bonds caused by adding alkali ions and the formation of crosslinking by low-coordinate aluminum polyhedra because of the presence of alkaline earth ions.
硅酸盐聚合物的粘弹性及其结构意义
DOI: 10.1016/0022-3093(70)90183-3
发表时间: 1970
影响因子: 3.5
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