Direct calorimetric measurement of enthalpies of phase transitions at 2000°-2400°C in yttria and zirconia

Alexandra Navrotsky; Luc Benoist; Herve Lefebvre

Direct calorimetric measurement of enthalpies of phase transitions at 2000°-2400°C in yttria and zirconia

Alexandra Navrotsky, Luc Benoist, Herve Lefebvre

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

Abstract

High-temperature differential thermal analysis provided data on phase transitions in zirconia and yttria. The tetragonal form of ZrO₂ transforms to the cubic fluorite structure at 2311°±15°C with an enthalpy of 3.4±3.1 kJ/mol. Cubic C-type Y₂O₃ transforms, probably to the fluorite structure, at 2308°±15°C with ΔH = 47.7±3.0 kJ/mol. This high-temperature polymorph melts at 2382°±15°C with an enthalpy of fusion of 35.6±3.0 kJ/mol.

Original language	English (US)
Pages (from-to)	2942-2944
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	88
Issue number	10
State	Published - Oct 2005
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Cite this

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title = "Direct calorimetric measurement of enthalpies of phase transitions at 2000°-2400°C in yttria and zirconia",

abstract = "High-temperature differential thermal analysis provided data on phase transitions in zirconia and yttria. The tetragonal form of ZrO2 transforms to the cubic fluorite structure at 2311°±15°C with an enthalpy of 3.4±3.1 kJ/mol. Cubic C-type Y2O3 transforms, probably to the fluorite structure, at 2308°±15°C with ΔH = 47.7±3.0 kJ/mol. This high-temperature polymorph melts at 2382°±15°C with an enthalpy of fusion of 35.6±3.0 kJ/mol.",

author = "Alexandra Navrotsky and Luc Benoist and Herve Lefebvre",

year = "2005",

month = oct,

language = "English (US)",

volume = "88",

pages = "2942--2944",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

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T1 - Direct calorimetric measurement of enthalpies of phase transitions at 2000°-2400°C in yttria and zirconia

AU - Navrotsky, Alexandra

AU - Benoist, Luc

AU - Lefebvre, Herve

PY - 2005/10

Y1 - 2005/10

N2 - High-temperature differential thermal analysis provided data on phase transitions in zirconia and yttria. The tetragonal form of ZrO2 transforms to the cubic fluorite structure at 2311°±15°C with an enthalpy of 3.4±3.1 kJ/mol. Cubic C-type Y2O3 transforms, probably to the fluorite structure, at 2308°±15°C with ΔH = 47.7±3.0 kJ/mol. This high-temperature polymorph melts at 2382°±15°C with an enthalpy of fusion of 35.6±3.0 kJ/mol.

AB - High-temperature differential thermal analysis provided data on phase transitions in zirconia and yttria. The tetragonal form of ZrO2 transforms to the cubic fluorite structure at 2311°±15°C with an enthalpy of 3.4±3.1 kJ/mol. Cubic C-type Y2O3 transforms, probably to the fluorite structure, at 2308°±15°C with ΔH = 47.7±3.0 kJ/mol. This high-temperature polymorph melts at 2382°±15°C with an enthalpy of fusion of 35.6±3.0 kJ/mol.

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 10

ER -

Direct calorimetric measurement of enthalpies of phase transitions at 2000°-2400°C in yttria and zirconia

Abstract

ASJC Scopus subject areas

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