Glass formation and transition temperatures in sodium and lithium borate and aluminoborate melts up to 72 mol.% alkali

S. W. Martin; C. A. Angell

doi:10.1016/0022-3093(84)90368-5

Glass formation and transition temperatures in sodium and lithium borate and aluminoborate melts up to 72 mol.% alkali

S. W. Martin
, C. A. Angell

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

We report continuous glass formation and glass transition temperatures T_g for the pseudo-binary systems xM₂O (1 - x) (0.87B₂O₃0.13Al₂O₃) to x = 0.675 for M = Na and 0.575 for M = Li. A dependence of both T_g and glass-forming range on starting materials is found at high alkali contents, and attributed to retained CO₂. Maxima in T_g for both binary and pseudo-binary systems are quantitatively described in terms of two effects: (i) creation of 4-coordinated borons (increasing T_g), and (ii) creation of non-bridging [BO₃] oxygens (decreasing T_g. To first approximation we find the latter imparting a stronger effect on T_g.

Original language	English (US)
Pages (from-to)	429-442
Number of pages	14
Journal	Journal of Non-Crystalline Solids
Volume	66
Issue number	3
DOIs	https://doi.org/10.1016/0022-3093(84)90368-5
State	Published - Aug 2 1984
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(84)90368-5

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title = "Glass formation and transition temperatures in sodium and lithium borate and aluminoborate melts up to 72 mol.\% alkali",

abstract = "We report continuous glass formation and glass transition temperatures Tg for the pseudo-binary systems xM2O (1 - x) (0.87B2O30.13Al2O3) to x = 0.675 for M = Na and 0.575 for M = Li. A dependence of both Tg and glass-forming range on starting materials is found at high alkali contents, and attributed to retained CO2. Maxima in Tg for both binary and pseudo-binary systems are quantitatively described in terms of two effects: (i) creation of 4-coordinated borons (increasing Tg), and (ii) creation of non-bridging [BO3] oxygens (decreasing Tg. To first approximation we find the latter imparting a stronger effect on Tg.",

author = "Martin, \{S. W.\} and Angell, \{C. A.\}",

year = "1984",

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doi = "10.1016/0022-3093(84)90368-5",

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T1 - Glass formation and transition temperatures in sodium and lithium borate and aluminoborate melts up to 72 mol.% alkali

AU - Martin, S. W.

AU - Angell, C. A.

PY - 1984/8/2

Y1 - 1984/8/2

N2 - We report continuous glass formation and glass transition temperatures Tg for the pseudo-binary systems xM2O (1 - x) (0.87B2O30.13Al2O3) to x = 0.675 for M = Na and 0.575 for M = Li. A dependence of both Tg and glass-forming range on starting materials is found at high alkali contents, and attributed to retained CO2. Maxima in Tg for both binary and pseudo-binary systems are quantitatively described in terms of two effects: (i) creation of 4-coordinated borons (increasing Tg), and (ii) creation of non-bridging [BO3] oxygens (decreasing Tg. To first approximation we find the latter imparting a stronger effect on Tg.

AB - We report continuous glass formation and glass transition temperatures Tg for the pseudo-binary systems xM2O (1 - x) (0.87B2O30.13Al2O3) to x = 0.675 for M = Na and 0.575 for M = Li. A dependence of both Tg and glass-forming range on starting materials is found at high alkali contents, and attributed to retained CO2. Maxima in Tg for both binary and pseudo-binary systems are quantitatively described in terms of two effects: (i) creation of 4-coordinated borons (increasing Tg), and (ii) creation of non-bridging [BO3] oxygens (decreasing Tg. To first approximation we find the latter imparting a stronger effect on Tg.

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U2 - 10.1016/0022-3093(84)90368-5

DO - 10.1016/0022-3093(84)90368-5

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AN - SCOPUS:0021479761

SN - 0022-3093

VL - 66

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EP - 442

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 3

ER -

Glass formation and transition temperatures in sodium and lithium borate and aluminoborate melts up to 72 mol.% alkali

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