Relation between elastic modulus and glass softening temperature in the delocalized atom model

Сандитов, Б. Д.; Sangadiev, S. Sh.; Сандитов, Д. С.

doi:10.1134/s106377611207014x

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…The maximum value of T g , 300 °C, is only a little higher than that of the classic thiophosphate glass ion conductor, 0.30P 2 S 5 ‐0.70Li 2 S (212 °C) . The fact that there is a linear correlation between the softening temperature and the elastic (Young's) modulus is in accord with our observations that both the thiophosphate and these oxythioborosilicate glasses are easily pelletized and relatively ductile. Both T x and T l are increased by about 60 °C, and the thermal stability of each composition is summarized in Table S2 (Supporting Information).…”

Section: Resultssupporting

confidence: 87%

A Lithium Oxythioborosilicate Solid Electrolyte Glass with Superionic Conductivity

Kaup

Bazak

Vajargah

et al. 2020

Advanced Energy Materials

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As potential next‐generation energy storage devices, solid‐state lithium batteries require highly functional solid state electrolytes. Recent research is primarily focused on crystalline materials, while amorphous materials offer advantages by eliminating problematic grain boundaries that can limit ion transport and trigger dendritic growth at the Li anode. However, simultaneously achieving high conductivity and stability in glasses is a challenge. New quaternary superionic lithium oxythioborate glasses are reported that exhibit high ion conductivity up to 2 mS cm−1 despite relatively high oxygen: sulfur ratios of more than 1:2, that exhibit greatly reduced H2S evolution upon exposure to air compared to Li7P3S11. These monolithic glasses are prepared from vitreous melts without ball‐milling and exhibit no discernable XRD pattern. Solid‐state NMR studies elucidate the structural entities that comprise the local glass structure which dictates fast ion conduction. Stripping/plating onto lithium metal results in very low polarization at a current density of 0.1 mA cm−2 over repeated cycling. Evaluation of the optimal glass composition as an electrolyte in an all‐solid‐state battery shows it exhibits excellent cycling stability and maintains near theoretical capacity for over 130 cycles at room temperature with Coulombic efficiency close to 99.9%, opening up new avenues of exploration for these quaternary compositions.

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Section: Resultssupporting

confidence: 87%

A Lithium Oxythioborosilicate Solid Electrolyte Glass with Superionic Conductivity

Kaup

Bazak

Vajargah

et al. 2020

Advanced Energy Materials

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“…On the other hand, the softening of the glass with a rising temperature is caused by the fluctuation of the critical displacements of bridging atoms from their equilibrium position [10]. Such atoms, which are capable of critical displacements, are called delocalized atoms.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, in principle, the reference oscillator ensures that only one single adjustment is needed to cover the whole temperature range, and also temperature scans of a sample can be performed. The governing equations for the frequencies of the reference oscillator as well as for the oscillating tube are, (10) and,…”

Section: Oscillation-type Density Metersmentioning

confidence: 99%

Temperature robustness of oscillation-type density meters

Schiebl¹,

Wasylewski²

2019

Meas. Sci. Technol.

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The temperature robustness of an oscillation-type density meter was investigated with the aim of examining the limitations of measurement uncertainty. We demonstrate that the measured density by such a device reveals a relaxational behavior after a temperature adjustment of the glass vibrating tube. From an analysis of the time-dependent measured density, we demonstrate that this behavior is neither caused by a time-dependent temperature of the oscillation tube due to convective heat transfer after temperature adjustment of the device, or by a time-dependent spring constant of the oscillation tube, since this effect is suppressed by a reference oscillation tube. Instead, we show that this behavior is inherently connected to the relaxational behavior of the volume of the tube which is governed by the elastic properties of glass. By rigorous analysis of the time characteristics of the measured density, we were able to determine the characteristic time constant of the relaxation at different temperatures, and consequently we further show that the characteristic time constant of the relaxation follows a temperature-activated behavior. A characteristic waiting time after a temperature adjustment of the device is also presented in order to keep the uncertainty as small as possible.

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“…2 (a)-(b) for groups without PC. Indeed relation between the T g and DC, and using T g as an index of progress of cure (DiBenedetto, 1987;Kato et al, 2020;Lovell et al, 2001;Pascault and Williams, 1990) and between T g and E' have been reported (Sanditov et al, 2012).…”

Section: Discussionmentioning

confidence: 98%

Influence of polymerization pressure and post-cure treatment on conversion degree and viscoelastic properties of polymer infiltrated ceramic network

Pomès

Béhin

Jordan

et al. 2021

Journal of the Mechanical Behavior of Biomedical Materials

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This study aimed at determining an optimum polymerization pressure for Polymer Infiltrated Ceramic Network (PICN) blocks by characterizing the conversion degree (DC) and the viscoelastic properties of experimental PICN blocks polymerized at 90 • C under various high pressures followed or not by post-cure treatment (PC). Near infrared analysis and dynamic mechanical analysis were used to characterize DC and viscoelastic properties of sixteen PICN: one control (thermo-cured) and fifteen experimental groups (one thermo-cured followed by PC and fourteen high pressure polymerized PICN, in the range of 50-350 MPa without and with PC). Conversion degree of high pressure polymerized PICN blocks without post curing displays an optimum between 100 and 150 MPa resulting in an improved E ′ and T g . Post curing induces a higher DC with a controversial effect on thermomechanical properties. The results suggested that 100-150 MPa without PC is an optimum polymerization parameter, resulting in PICN blocks with significantly better DC, T g , E'.

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Relation between elastic modulus and glass softening temperature in the delocalized atom model

Cited by 9 publications

References 17 publications

A Lithium Oxythioborosilicate Solid Electrolyte Glass with Superionic Conductivity

A Lithium Oxythioborosilicate Solid Electrolyte Glass with Superionic Conductivity

Temperature robustness of oscillation-type density meters

Influence of polymerization pressure and post-cure treatment on conversion degree and viscoelastic properties of polymer infiltrated ceramic network

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