A kinetic treatment of glass formation. VIII: Critical cooling rates for Na2OSiO2 and K2OSiO2 glasses

Chih Yao Fang; H. Yinnon; D. R. Uhlmann

doi:10.1016/0022-3093(83)90433-7

A kinetic treatment of glass formation. VIII: Critical cooling rates for Na₂OSiO₂ and K₂OSiO₂ glasses

Chih Yao Fang, H. Yinnon, D. R. Uhlmann

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35 Scopus citations

Abstract

The critical cooling rates required to form glass have been measured for Na₂OSiO₂ compositions containing 15.4, 20.6, 29.9 and 34.0 wt% Na₂O and for K₂OSiO₂ compositions containing 15.3, 21.7, 34.3, 41.8 and 43.9 wt% K₂O. Pronounced minima in critical cooling rate are observed in the ranges about 25 wt% Na₂O and 33 wt% K₂O. The locations of these minima correlate with regions of low liquidus temperatures (near eutectics) in the phase diagrams. Calculations of critical cooling rates have been carried out using the analysis of crystallization statistics and the simplified model of glass formation. In both cases, the models predict well the measured critical cooling rates and their variation with composition.

Original language	English (US)
Pages (from-to)	465-471
Number of pages	7
Journal	Journal of Non-Crystalline Solids
Volume	57
Issue number	3
DOIs	https://doi.org/10.1016/0022-3093(83)90433-7
State	Published - Sep 2 1983
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/0022-3093(83)90433-7

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title = "A kinetic treatment of glass formation. VIII: Critical cooling rates for Na2OSiO2 and K2OSiO2 glasses",

abstract = "The critical cooling rates required to form glass have been measured for Na2OSiO2 compositions containing 15.4, 20.6, 29.9 and 34.0 wt% Na2O and for K2OSiO2 compositions containing 15.3, 21.7, 34.3, 41.8 and 43.9 wt% K2O. Pronounced minima in critical cooling rate are observed in the ranges about 25 wt% Na2O and 33 wt% K2O. The locations of these minima correlate with regions of low liquidus temperatures (near eutectics) in the phase diagrams. Calculations of critical cooling rates have been carried out using the analysis of crystallization statistics and the simplified model of glass formation. In both cases, the models predict well the measured critical cooling rates and their variation with composition.",

author = "Fang, {Chih Yao} and H. Yinnon and Uhlmann, {D. R.}",

note = "Funding Information: Financial support for the present work was provided by the National Science Foundation. This support is gratefully acknowledged, as is that of the John Simon Guggenheim Foundation, who provided one of the authors (DRU) with a Fellowship for the 1981-1982 year.",

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doi = "10.1016/0022-3093(83)90433-7",

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T2 - Critical cooling rates for Na2OSiO2 and K2OSiO2 glasses

AU - Fang, Chih Yao

AU - Yinnon, H.

AU - Uhlmann, D. R.

N1 - Funding Information: Financial support for the present work was provided by the National Science Foundation. This support is gratefully acknowledged, as is that of the John Simon Guggenheim Foundation, who provided one of the authors (DRU) with a Fellowship for the 1981-1982 year.

PY - 1983/9/2

Y1 - 1983/9/2

N2 - The critical cooling rates required to form glass have been measured for Na2OSiO2 compositions containing 15.4, 20.6, 29.9 and 34.0 wt% Na2O and for K2OSiO2 compositions containing 15.3, 21.7, 34.3, 41.8 and 43.9 wt% K2O. Pronounced minima in critical cooling rate are observed in the ranges about 25 wt% Na2O and 33 wt% K2O. The locations of these minima correlate with regions of low liquidus temperatures (near eutectics) in the phase diagrams. Calculations of critical cooling rates have been carried out using the analysis of crystallization statistics and the simplified model of glass formation. In both cases, the models predict well the measured critical cooling rates and their variation with composition.

AB - The critical cooling rates required to form glass have been measured for Na2OSiO2 compositions containing 15.4, 20.6, 29.9 and 34.0 wt% Na2O and for K2OSiO2 compositions containing 15.3, 21.7, 34.3, 41.8 and 43.9 wt% K2O. Pronounced minima in critical cooling rate are observed in the ranges about 25 wt% Na2O and 33 wt% K2O. The locations of these minima correlate with regions of low liquidus temperatures (near eutectics) in the phase diagrams. Calculations of critical cooling rates have been carried out using the analysis of crystallization statistics and the simplified model of glass formation. In both cases, the models predict well the measured critical cooling rates and their variation with composition.

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A kinetic treatment of glass formation. VIII: Critical cooling rates for Na₂OSiO₂ and K₂OSiO₂ glasses

Abstract

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