Thermal behaviour and fragility of Sb2O3-containing zinc borophosphate glasses

Šubčík, Jiří; Mošner, Petr; Koudelka, Ladislav

doi:10.1007/s10973-007-8457-1

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…This is an important step for the understanding of microscopic mechanism responsible for the degree of fragility in materials. As many studies show, the determination of the fragility index allows the characterization of different glass forming materials [9][10][11][12][13].…”

Section: Bond Strength-coordination Number Fluctuation Modelmentioning

confidence: 99%

A comparison between the bond-strength-coordination number fluctuation model and the random walk model of viscosity

Ndeugueu

Ikeda

Aniya

2009

J Therm Anal Calorim

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We have studied the temperature dependence of the viscosity of some polymeric materials by using both, the bond strength-coordination number fluctuation model and the random walk model. The results reveal that both models show an excellent agreement with the experimental data. For the random walk model, two equations corresponding to two temperature regimes (low-T and high-T) separated by the critical temperature c T , which is difficult to determine, are needed to describe the temperature dependence of the viscosity of a fragile system, whereas for the bond strength-coordination number fluctuation model, a single equation with clear physical meaning describes the temperature dependence of the viscosity of both, the fragile and strong systems. We have also studied the relationship between the normalized temperature range of cooperativity and the fragility index. A theoretical expression for the relationship has been derived based on the bond strength-coordination number fluctuation model. The comparison with the experimental data shows a good agreement, leading to the conclusion that the kinetic properties of glass forming liquids and the cooperativity of molecular relaxations are correlated.

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Section: Bond Strength-coordination Number Fluctuation Modelmentioning

confidence: 99%

A comparison between the bond-strength-coordination number fluctuation model and the random walk model of viscosity

Ndeugueu

Ikeda

Aniya

2009

J Therm Anal Calorim

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Evaluation of specific heat and related thermodynamic properties of Ge1−x Sn x Se2.5 (0 ≤ x ≤ 0.5) glasses

Deepika

Rathore

Saxena

2009

J Therm Anal Calorim

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Thermal properties of 60P2O5–20Fe2O3–20Al2O3 glass for salt waste immobilization

Ciecińska

Stoch

et al. 2015

J Therm Anal Calorim

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Vitrification is the most effective method of hazardous waste immobilization. Toxic elements are incorporated into a glass structure. Iron alumino-phosphate glasses are presently being considered as a matrix for storage of a radioactive waste which cannot be vitrified using conventional borosilicate waste glasses. Influence of Na 2 SO 4 as a one of components such the waste on thermal properties and crystallization ability of 60P 2 O 5 -20Fe 2 O 3 -20Al 2 O 3 glass was studied. It was observed that Na 2 SO 4 decreases transformation temperature and increases DC p . The glass characteristic temperatures, glass crystallization ability and crystallizing phases were determined. Na 2 SO 4 increases the glass crystallization ability which could be related with DC p heat capacity accompanying glass transition changes. The glass internal structure rebuilding accompanying the sodium content increase is considered. The obtained results were compared with structural model previously developed for 60P 2 O 5 -40Fe 2 O 3 glass and showed the structural similarity between these glasses.

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Thermal behaviour and fragility of Sb2O3-containing zinc borophosphate glasses

Cited by 4 publications

References 7 publications

A comparison between the bond-strength-coordination number fluctuation model and the random walk model of viscosity

A comparison between the bond-strength-coordination number fluctuation model and the random walk model of viscosity

Evaluation of specific heat and related thermodynamic properties of Ge1−x Sn x Se2.5 (0 ≤ x ≤ 0.5) glasses

Thermal properties of 60P2O5–20Fe2O3–20Al2O3 glass for salt waste immobilization

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