XRD investigation of metastable phase formation in Li2O-2SiO2 glass

Lori L. Burgner; Michael C. Weinberg; Pierre Lucas; Paulo C. Soares; Edgar D. Zanotto

doi:10.1016/S0022-3093(99)00376-2

XRD investigation of metastable phase formation in Li₂O-2SiO₂ glass

Lori L. Burgner, Michael C. Weinberg, Pierre Lucas, Paulo C. Soares, Edgar D. Zanotto

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29 Scopus citations

Abstract

Metastable crystal phase formation in lithium disilicate glass has been a subject of controversy for many years. However, recent evidence mainly obtained via the use of electron microscopy has provided strong evidence for formation of metastable phases during the early stages of crystallization in this composition. Very recently, however, a study has appeared which suggests that these metastable phases are long-lived and can be detected with the aid of XRD. Here, we present XRD results obtained for lithium disilicate glasses which were heated for various time periods at several temperatures in the nucleation regime. In no case do we find any evidence for metastable phase formation. Possible causes for the discrepancy between the present and previous experimental results are discussed.

Original language	English (US)
Pages (from-to)	264-268
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	255
Issue number	2
DOIs	https://doi.org/10.1016/S0022-3093(99)00376-2
State	Published - Oct 1 1999
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/S0022-3093(99)00376-2

Cite this

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title = "XRD investigation of metastable phase formation in Li2O-2SiO2 glass",

abstract = "Metastable crystal phase formation in lithium disilicate glass has been a subject of controversy for many years. However, recent evidence mainly obtained via the use of electron microscopy has provided strong evidence for formation of metastable phases during the early stages of crystallization in this composition. Very recently, however, a study has appeared which suggests that these metastable phases are long-lived and can be detected with the aid of XRD. Here, we present XRD results obtained for lithium disilicate glasses which were heated for various time periods at several temperatures in the nucleation regime. In no case do we find any evidence for metastable phase formation. Possible causes for the discrepancy between the present and previous experimental results are discussed.",

author = "Burgner, {Lori L.} and Weinberg, {Michael C.} and Pierre Lucas and Soares, {Paulo C.} and Zanotto, {Edgar D.}",

note = "Funding Information: M.C.W. wishes to extend his appreciation to the Office of Basic Energy Sciences of the US Department of Energy for partial support of this work. E.D.Z. thanks FAPESP and PRONEX for financial support of this work.",

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T1 - XRD investigation of metastable phase formation in Li2O-2SiO2 glass

AU - Burgner, Lori L.

AU - Weinberg, Michael C.

AU - Lucas, Pierre

AU - Soares, Paulo C.

AU - Zanotto, Edgar D.

N1 - Funding Information: M.C.W. wishes to extend his appreciation to the Office of Basic Energy Sciences of the US Department of Energy for partial support of this work. E.D.Z. thanks FAPESP and PRONEX for financial support of this work.

PY - 1999/10/1

Y1 - 1999/10/1

N2 - Metastable crystal phase formation in lithium disilicate glass has been a subject of controversy for many years. However, recent evidence mainly obtained via the use of electron microscopy has provided strong evidence for formation of metastable phases during the early stages of crystallization in this composition. Very recently, however, a study has appeared which suggests that these metastable phases are long-lived and can be detected with the aid of XRD. Here, we present XRD results obtained for lithium disilicate glasses which were heated for various time periods at several temperatures in the nucleation regime. In no case do we find any evidence for metastable phase formation. Possible causes for the discrepancy between the present and previous experimental results are discussed.

AB - Metastable crystal phase formation in lithium disilicate glass has been a subject of controversy for many years. However, recent evidence mainly obtained via the use of electron microscopy has provided strong evidence for formation of metastable phases during the early stages of crystallization in this composition. Very recently, however, a study has appeared which suggests that these metastable phases are long-lived and can be detected with the aid of XRD. Here, we present XRD results obtained for lithium disilicate glasses which were heated for various time periods at several temperatures in the nucleation regime. In no case do we find any evidence for metastable phase formation. Possible causes for the discrepancy between the present and previous experimental results are discussed.

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XRD investigation of metastable phase formation in Li₂O-2SiO₂ glass

Abstract

ASJC Scopus subject areas

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