Investigation of the thermophysical properties of zirconium by subsecond pulsed heating technique

Petrova, I. I.; Pelet︠s︡kiĭ, V. Ė.; Samsonov, B. N.

doi:10.1007/bf02755802

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Above 273.15 K and up to the α-β transition temperature, the Douglas and Victor [87] enthalpy measurements (373-1124 K) were adopted after a correction to the International Temperature Scale of 1990 (ITS-90 is an approximation of the thermodynamic temperature scale that facilitates comparability and compatibility of temperature measurements internationally). Before melting, specific heat measurements of Cezairliyan and Righini [88] (1500-2100K) and Petrova et al [89] (1200-2100 K) were combined with the drop calorimetry enthalpy measurements of Rösner-Kuhnetal et al [90] (1821-2105 K).…”

Section: Enthalpymentioning

confidence: 99%

Ab initio inspection of thermophysical experiments for zirconium near melting

Paramonov¹,

Minakov²,

Fokin³

et al. 2021

Preprint

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We present quantum molecular dynamics calculations of thermophysical properties of solid and liquid zirconium in the vicinity of melting. An overview of available experimental data is also presented. We focus on the analysis of thermal expansion, molar enthalpy, resistivity and normal spectral emissivity of solid and liquid Zr. Possible reasons of discrepancies between the firstprinciple simulations and experiments are discussed. Our calculations reveal a significant volume change on melting in agreement with electrostatic levitation experiments. Meanwhile, we confirm a low value of enthalpy of fusion obtained in some pulse-heating experiments. Electrical resistivity of solid and liquid Zr is systematically underestimated in our simulations, however the slope of resistivity temperature dependencies agrees with experiment. Our calculations predict almost constant normal spectral emissivity in liquid Zr.

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Section: Enthalpymentioning

confidence: 99%

Ab initio inspection of thermophysical experiments for zirconium near melting

Paramonov¹,

Minakov²,

Fokin³

et al. 2021

Preprint

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show abstract

“…The resistivity of solid zirconium was measured in many works in the range of temperature 1-2127 K; these data were collected by Desai [9]. In dynamical experiments by Korobenko et al [10][11][12] the electrical explosion of Zr foils and wires were applied to widen the range of resistivity measurements in liquid zirconium up to 4100 K. The optical properties of liquid Zr are poorly known and the data are available only near the melting temperature [13][14][15][16][17] while in the solid phase a lot of experiments can be found [18][19][20][21][22]. Meanwhile, transport and optical properties of dense metallic plasma are crucial for magnetohydrodynamic and radiative magnetoplasmadynamic codes [23].…”

Section: Introductionmentioning

confidence: 99%

Ab Initio Calculations of Transport and Optical Properties of Dense Zr Plasma Near Melting

2022

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The dynamic electrical conductivity of dense Zr plasma near melting is calculated using ab initio molecular dynamics and the Kubo–Greenwood formula. The antisymmetrization of the electronic wave function is considered with the determinant of one-electron wave functions; exchange and correlation effects are treated via an exchange–correlation functional. Optical properties are restored using the Kramers–Kronig transformation. The influence of computational parameters and inner shell electrons on the results is thoroughly investigated. We demonstrate the convergence of our computations and analyze comparison with experimental data.

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Thermophysical Properties of Solid Phase Zirconium at High Temperatures

Milošević

Maglić

2006

Int J Thermophys

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This paper presents experimental results on the thermophysical properties of relatively pure polycrystalline zirconium samples in the solid phase from room temperature up to near the melting point. The specific heat capacity and specific electrical resistivity were measured from 290 to 1970 K, the hemispherical total emissivity from 1400 to 2000 K, the normal spectral emissivity from 1480 to 1940 K, and the thermal diffusivity in the range from 290 to 1470 K. From these data, the thermal conductivity and Lorentz number were computed in the range from 290 to 1470 K. For necessary corrections the most recent values of the linear thermal expansion from the literature have been used. Subsecond pulse calorimetry for measuring heat capacity, specific electrical resistivity, and both emissivities and the laser flash method for measuring thermal diffusivity were applied. Samples in the form of a thin rod and in the form of a thin disk were used in the first and second methods, respectively. Measurement uncertainties were generally about 3% for heat capacity, 1.6% for specific electrical resistivity, 3-10% for the two emissivities, and from less than 1% up to 6% for thermal diffusivity. All the results are discussed in reference to available literature data.

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Investigation of the thermophysical properties of zirconium by subsecond pulsed heating technique

Cited by 6 publications

References 2 publications

Ab initio inspection of thermophysical experiments for zirconium near melting

Ab initio inspection of thermophysical experiments for zirconium near melting

Ab Initio Calculations of Transport and Optical Properties of Dense Zr Plasma Near Melting

Thermophysical Properties of Solid Phase Zirconium at High Temperatures

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