Thermal equation of state of a natural kyanite up to 8.55 GPa and 1273 K

Qiang He; Xi Liu; Baosheng Li; Liwei Deng; Wei Liu; Liping Wang

doi:10.1016/j.mre.2016.07.003

Thermal equation of state of a natural kyanite up to 8.55 GPa and 1273 K

Qiang He
, Xi Liu
, Baosheng Li
, Liwei Deng
, Wei Liu
, Liping Wang

Geosciences

Ministry of Education of the People's Republic of China
Peking University
China Academy of Engineering Physics
Chinese Academy of Sciences
Stony Brook University
University of Nevada, Las Vegas

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

9 Scopus citations

Abstract

The thermal equation of state of a natural kyanite has been investigated with a DIA-type, cubic-anvil apparatus (SAM85) combined with an energy-dispersive synchrotron X-ray radiation technique up to 8.55 GPa and 1273 K. No phase transition was observed in the studied pressure-temperature (P-T) range. The Le Bail full profile refinement technique was used to derive the unit-cell parameters. By fixing the bulk modulus K₀ as 196 GPa and its pressure derivative K₀ ^′ as 4, our P-V (volume)-T data were fitted to the high temperature Birch–Murnaghan equation of state. The obtained parameters for the kyanite are: V₀ = 294.05(9) Å³, α = 2.53(11) × 10⁻⁵ K⁻¹ and (∂K/∂T)_P = −0.021(8) GPa∙K⁻¹. These parameters have been combined with other experimentally-measured thermodynamic data for the relevant phases to calculate the P-T locus of the reaction kyanite = stishovite + corundum. With this thermodynamically constrained phase boundary, previous high-pressure phase equilibrium experimental studies with the multi-anvil press have been evaluated.

Original language	English
Pages (from-to)	269-276
Number of pages	8
Journal	Matter and Radiation at Extremes
Volume	1
Issue number	5
DOIs	https://doi.org/10.1016/j.mre.2016.07.003
State	Published - Sep 2016

Keywords

High-pressure and high-temperature
Kyanite
Kyanite decomposition
Thermal equation of state
Thermodynamic calculation
X-ray diffraction

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10.1016/j.mre.2016.07.003

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title = "Thermal equation of state of a natural kyanite up to 8.55 GPa and 1273 K",

abstract = "The thermal equation of state of a natural kyanite has been investigated with a DIA-type, cubic-anvil apparatus (SAM85) combined with an energy-dispersive synchrotron X-ray radiation technique up to 8.55 GPa and 1273 K. No phase transition was observed in the studied pressure-temperature (P-T) range. The Le Bail full profile refinement technique was used to derive the unit-cell parameters. By fixing the bulk modulus K0 as 196 GPa and its pressure derivative K0 ′ as 4, our P-V (volume)-T data were fitted to the high temperature Birch–Murnaghan equation of state. The obtained parameters for the kyanite are: V0 = 294.05(9) {\AA}3, α = 2.53(11) × 10−5 K−1 and (∂K/∂T)P = −0.021(8) GPa∙K−1. These parameters have been combined with other experimentally-measured thermodynamic data for the relevant phases to calculate the P-T locus of the reaction kyanite = stishovite + corundum. With this thermodynamically constrained phase boundary, previous high-pressure phase equilibrium experimental studies with the multi-anvil press have been evaluated.",

keywords = "High-pressure and high-temperature, Kyanite, Kyanite decomposition, Thermal equation of state, Thermodynamic calculation, X-ray diffraction",

author = "Qiang He and Xi Liu and Baosheng Li and Liwei Deng and Wei Liu and Liping Wang",

note = "Publisher Copyright: {\textcopyright} 2016 Science and Technology Information Center, China Academy of Engineering Physics",

year = "2016",

month = sep,

doi = "10.1016/j.mre.2016.07.003",

language = "English",

volume = "1",

pages = "269--276",

journal = "Matter and Radiation at Extremes",

issn = "2468-2047",

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T1 - Thermal equation of state of a natural kyanite up to 8.55 GPa and 1273 K

AU - He, Qiang

AU - Liu, Xi

AU - Li, Baosheng

AU - Deng, Liwei

AU - Liu, Wei

AU - Wang, Liping

PY - 2016/9

Y1 - 2016/9

N2 - The thermal equation of state of a natural kyanite has been investigated with a DIA-type, cubic-anvil apparatus (SAM85) combined with an energy-dispersive synchrotron X-ray radiation technique up to 8.55 GPa and 1273 K. No phase transition was observed in the studied pressure-temperature (P-T) range. The Le Bail full profile refinement technique was used to derive the unit-cell parameters. By fixing the bulk modulus K0 as 196 GPa and its pressure derivative K0 ′ as 4, our P-V (volume)-T data were fitted to the high temperature Birch–Murnaghan equation of state. The obtained parameters for the kyanite are: V0 = 294.05(9) Å3, α = 2.53(11) × 10−5 K−1 and (∂K/∂T)P = −0.021(8) GPa∙K−1. These parameters have been combined with other experimentally-measured thermodynamic data for the relevant phases to calculate the P-T locus of the reaction kyanite = stishovite + corundum. With this thermodynamically constrained phase boundary, previous high-pressure phase equilibrium experimental studies with the multi-anvil press have been evaluated.

AB - The thermal equation of state of a natural kyanite has been investigated with a DIA-type, cubic-anvil apparatus (SAM85) combined with an energy-dispersive synchrotron X-ray radiation technique up to 8.55 GPa and 1273 K. No phase transition was observed in the studied pressure-temperature (P-T) range. The Le Bail full profile refinement technique was used to derive the unit-cell parameters. By fixing the bulk modulus K0 as 196 GPa and its pressure derivative K0 ′ as 4, our P-V (volume)-T data were fitted to the high temperature Birch–Murnaghan equation of state. The obtained parameters for the kyanite are: V0 = 294.05(9) Å3, α = 2.53(11) × 10−5 K−1 and (∂K/∂T)P = −0.021(8) GPa∙K−1. These parameters have been combined with other experimentally-measured thermodynamic data for the relevant phases to calculate the P-T locus of the reaction kyanite = stishovite + corundum. With this thermodynamically constrained phase boundary, previous high-pressure phase equilibrium experimental studies with the multi-anvil press have been evaluated.

KW - High-pressure and high-temperature

KW - Kyanite

KW - Kyanite decomposition

KW - Thermal equation of state

KW - Thermodynamic calculation

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/85040812546

U2 - 10.1016/j.mre.2016.07.003

DO - 10.1016/j.mre.2016.07.003

M3 - Article

AN - SCOPUS:85040812546

SN - 2468-2047

VL - 1

SP - 269

EP - 276

JO - Matter and Radiation at Extremes

JF - Matter and Radiation at Extremes

IS - 5

ER -

Thermal equation of state of a natural kyanite up to 8.55 GPa and 1273 K

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