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Yekaterinburg, Russia

Bodryakov V.Y.,Ural State Pedagogical University
High Temperature | Year: 2016

Following the course of previously published series, this work studies in detail the correlation of the volumetric thermal expansion coefficient β(T) and the heat capacity C(T) of refractory tantalum. It is demonstrated that a clear correlation β(C) takes place in the lower temperature range and remains up to the metal melting point inclusively. Significant deviation from lower temperature linear behavior of the β(C) dependence occurs when the heat capacity reaches the classical 3R Dulong–Petit limit. The temperature dependence of differential Grüneisen parameter γ' ~ (∂β/∂С) is estimated. © 2016, Pleiades Publishing, Ltd. Source


By the example of molybdenum, the detailed correlation investigation between the volume thermal expansion coefficient, o(T), and the heat capacity, C(T), of the refractory metal is carried out. It is shown that distinct correlation of o(C) takes place not only within the low temperature region where it is linear and is known as the Grüneisen law but also within a much wider temperature region, up to the melting point of the metal. Essential deviation of the o(C) dependency from the low temperature linear behavior takes place when the heat capacity achieves its classical Dulong and Petit limit, 3R. © 2014, Pleiades Publishing, Ltd. Source


Melchakov Y.L.,Ural State Pedagogical University
Geochemistry International | Year: 2012

The study presents data on the annual transport of 72 elements through evapotranspiration calculated for two mid-elevation mountain landscapes of the Northern Urals. It was found that the main characteristics of element transport in the mountain-taiga and subalpine belts are controlled by combined ecological and geochemical factors. A mechanism is described for changes in some environmental parameters through the air-borne migration of evapotranspiration products. © 2012 Pleiades Publishing, Ltd. Source


Bodryakov V.Y.,Ural State Pedagogical University
Inorganic Materials | Year: 2015

The correlation between the volume expansivity β(T) and heat capacity C(T) of a solid inert gas (Xe) is analyzed in detail. It is shown that there is a clear β(C) correlation not only at low temperatures, where it is linear and known as Grüneisen's law, but also in a considerably broader temperature range, up to the melting point of xenon. A significant deviation from the low-temperature linear behavior of β(C) occurs when the heat capacity reaches 3R, the classical Dulong-Petit limit. © 2015 Pleiades Publishing, Ltd. Source


In continuing the series of publications started by the article about molybdenum, a detailed study of the correlation between the volume thermal expansion coefficient, ο(T), and the heat capacity, C(T), of another refractory metal, tungsten, is carried out. It is shown that a distinct correlation of ο(C) takes place not only at low temperatures, where it is linear and is known as the Grüneisen law, but also within a much wider temperature region, up to the melting point of the metal. A significant deviation from the low-temperature behavior of the linear dependence of ο(C) occurs when the heat capacity reaches its classical Dulong and Petit limit, 3R. The concept of the temperature dependence of the differential Grüneisen parameter, γ′ ∼ (∂ο/∂C) is introduced, and its evaluation is proposed. © 2015, Pleiades Publishing, Ltd. Source

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