High temperature behaviour of danburite-like borosilicates MB2Si2O6 (M = Ca, Sr, Ba)

Research output

Abstract

The thermal behaviour of danburite-like phases MB2Si2O6 (M = Ca, Sr, Ba) has been studied by in situ high temperature x-ray powder diffraction and heat treatments in a wide temperature range using a natural danburite (Ca) sample and synthetic samples of pekovite (Sr) and maleevite (Ba). Synthetic pekovite was obtained by solid state reactions at 900°C, whereas synthetic maleevite was synthesised by crystallisation from the melt. According to the high temperature x-ray powder diffraction study, the Ca, Sr, and Ba members of the danburite group demonstrate a weak anisotropy of thermal expansion with relatively low volume thermal expansion coefficients (19, 20, and 23×10–6 °C−1, respectively). Both thermal expansion coefficients and the expansion anisotropy increase with increasing size of the M2+ cations.
Original languageEnglish
Pages (from-to)189-196
JournalPhysics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B
Volume56
Issue number5
Publication statusPublished - 2015

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Anisotropy
anisotropy
coefficients
Crystallization
Solid state reactions
diffraction
Thermal expansion
Cations
thermal expansion
rays
heat treatment
Diffraction
Positive ions
Heat treatment
crystallization
solid state
cations
Temperature
expansion
temperature

Cite this

@article{ba5489e9359342aca52920a433633f0a,
title = "High temperature behaviour of danburite-like borosilicates MB2Si2O6 (M = Ca, Sr, Ba)",
abstract = "The thermal behaviour of danburite-like phases MB2Si2O6 (M = Ca, Sr, Ba) has been studied by in situ high temperature x-ray powder diffraction and heat treatments in a wide temperature range using a natural danburite (Ca) sample and synthetic samples of pekovite (Sr) and maleevite (Ba). Synthetic pekovite was obtained by solid state reactions at 900°C, whereas synthetic maleevite was synthesised by crystallisation from the melt. According to the high temperature x-ray powder diffraction study, the Ca, Sr, and Ba members of the danburite group demonstrate a weak anisotropy of thermal expansion with relatively low volume thermal expansion coefficients (19, 20, and 23×10–6 °C−1, respectively). Both thermal expansion coefficients and the expansion anisotropy increase with increasing size of the M2+ cations.",
author = "Gorelova, {Liudmila A.} and Filatov, {Stanislav K.} and Krzhizhanovskaya, {Maria G.} and Bubnova, {Rimma S.}",
year = "2015",
language = "English",
volume = "56",
pages = "189--196",
journal = "European journal of glass science and technology. Part B, Physics and chemistry of glasses",
issn = "1753-3562",
publisher = "Society of Glass Technology",
number = "5",

}

TY - JOUR

T1 - High temperature behaviour of danburite-like borosilicates MB2Si2O6 (M = Ca, Sr, Ba)

AU - Gorelova, Liudmila A.

AU - Filatov, Stanislav K.

AU - Krzhizhanovskaya, Maria G.

AU - Bubnova, Rimma S.

PY - 2015

Y1 - 2015

N2 - The thermal behaviour of danburite-like phases MB2Si2O6 (M = Ca, Sr, Ba) has been studied by in situ high temperature x-ray powder diffraction and heat treatments in a wide temperature range using a natural danburite (Ca) sample and synthetic samples of pekovite (Sr) and maleevite (Ba). Synthetic pekovite was obtained by solid state reactions at 900°C, whereas synthetic maleevite was synthesised by crystallisation from the melt. According to the high temperature x-ray powder diffraction study, the Ca, Sr, and Ba members of the danburite group demonstrate a weak anisotropy of thermal expansion with relatively low volume thermal expansion coefficients (19, 20, and 23×10–6 °C−1, respectively). Both thermal expansion coefficients and the expansion anisotropy increase with increasing size of the M2+ cations.

AB - The thermal behaviour of danburite-like phases MB2Si2O6 (M = Ca, Sr, Ba) has been studied by in situ high temperature x-ray powder diffraction and heat treatments in a wide temperature range using a natural danburite (Ca) sample and synthetic samples of pekovite (Sr) and maleevite (Ba). Synthetic pekovite was obtained by solid state reactions at 900°C, whereas synthetic maleevite was synthesised by crystallisation from the melt. According to the high temperature x-ray powder diffraction study, the Ca, Sr, and Ba members of the danburite group demonstrate a weak anisotropy of thermal expansion with relatively low volume thermal expansion coefficients (19, 20, and 23×10–6 °C−1, respectively). Both thermal expansion coefficients and the expansion anisotropy increase with increasing size of the M2+ cations.

M3 - Article

VL - 56

SP - 189

EP - 196

JO - European journal of glass science and technology. Part B, Physics and chemistry of glasses

JF - European journal of glass science and technology. Part B, Physics and chemistry of glasses

SN - 1753-3562

IS - 5

ER -