Study of metal conductivity near the critical point using a microwire electrical explosion in water

Oreshkin, V. I.; Baksht, R. B.; Labetsky, A. Yu.; Rousskikh, A. G.; Shishlov, A. V.; Levashov, P. R.; Khishchenko, K. V.; Glazyrin, I. V.

doi:10.1134/1.1778857

Cited by 68 publications

(29 citation statements)

References 6 publications

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“…conductivity, we used the tables in [11] constructed by the calculation-experimental technique [12], in which conductivity σ is considered as a certain empir ical function of the density and the specific energy introduced into a substance.…”

Section: Simulation Of An Explosionmentioning

confidence: 99%

Phase transformations of carbon under extreme energy action

et al. 2012

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Experiments are performed on a high current MIG generator (current amplitude 2.5 MA, current rise time 100 ns) to synthesize diamond like carbon forms. Magnetohydrodynamic calculations carried out before the experiments show that the conditions required for synthesizing diamond like structures appear during the compression of copper tubes 2-4 mm in diameter filled with graphite. The explosion products are analyzed on an EM 125 diffraction transmission electron microscope. During an explosion, the entire graph ite is found to transform into cubic carbon: crystals with the simple cubic lattice and a lattice parameter a = 0.5545 nm and with the face centered cubic lattice and a = 0.3694 nm are detected. The crystallite size is 5-25 nm.

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Section: Simulation Of An Explosionmentioning

confidence: 99%

Phase transformations of carbon under extreme energy action

et al. 2012

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“…The pulse amplitude of loading was regulated by changing the energy stored in the capacitors Wc. The discharge duration was 0.3÷0.8 μs, while melting of the copper conductor and its evaporation took much less time equaling to 50÷100 ns [4].…”

Section: Methodsmentioning

confidence: 99%

The effect of initial porosity of a sample under electric explosion loading

Bannikova¹,

Uvarov²,

Naimark³

2016

AIP Conference Proceedings

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Abstract. Tubular Al 2 O 3 ceramic samples were destroyed under shock wave loading using electrical explosion wire (EEW) in a liquid. The fragments were classified into two types: quasi-two-dimensional (2D) samples, the characteristic size of which, d*, was greater than (or equal to) the tube wall thickness; and three-dimensional (3D) samples of the size d* < d. The study of the influence of the initial sample porosity indicates a direct effect on the formation of 3D fragments, and the distribution of the porosity is described by the power law function with an exponent differing from that of the 3D fragments size distribution. According to the scenario, the initial defects (pores) provide conditions for multi-site fracture of ceramics under high-rate loading. The instability of fast crack propagation leads to micro-branching, which creates conditions for the formation of the 3D objects. The 3D fragments size distribution is described by the power law, which corresponds to the micro-branch distribution.

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“…The thermal equation of state Z(ρ, T ) can be written in a form: The components of (14) are obtained in forms…”

Section: Feos Structure: Crossover Functions and Regular Componentsmentioning

confidence: 99%

“…Equation (14) has to follow the ST exponential laws. Hence, we have to elaborate Z(ρ, T ) reg in a form:…”

Section: Feos Structure: Crossover Functions and Regular Componentsmentioning

confidence: 99%

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A new variant of a scaling hypothesis and a fundamental equation of state based on it

Kudryavtseva

Рыков

et al. 2018

J. Phys.: Conf. Ser.

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Abstract. This paper deals with a fundamental equation of state (FEOS) for substances. We have suggested a new method. It allows constructing FEOS that is based on the scaling theory of critical phenomena and describes thermodynamic properties related to liquid and gas phases of a substance in a wide range of the pressures and temperatures. In the framework of the methodological approach, we have provided: (i) a transition of FEOS in a virial equation of state in the low density region; (ii) a transition of FEOS in a Widom equation of state in the critical region. The method has been tested on the example of FEOS of R218. The area of applicability of FEOS is 0 < ρ/ρc < 3.2 in the density and 133 < T < 440 K in the temperature.We have compared FEOS with some equations of state and discussed the results. IntroductionThe problem of constructing a fundamental equation of state (FEOS) has attracted attention of researchers considered a substance behavior in the critical region [1][2][3][4][5][6][7][8][9][10][11][12]. Especially this problem is investigated concerning some metals, which are characterized by the critical point locating at high temperatures and pressures [13][14][15][16][17]. We have analyzed main approaches those let us get successful results. Articles [1-3] represent a crossover equation of state written in a parametric form. There is a transition of the crossover equation to Scofield-Litster-Ho model (LM) [18] in an asymptotic vicinity of the critical point.Our analysis [19] has shown that the crossover equation [1][2][3][4][5] has an area of applicability: 0.4 ω 1.3 and 0.97 t 1.3, here ω = ρ/ρ c and t = T /T c . Thus, an equation of state [5] represents:

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Study of metal conductivity near the critical point using a microwire electrical explosion in water

Cited by 68 publications

References 6 publications

Phase transformations of carbon under extreme energy action

Phase transformations of carbon under extreme energy action

The effect of initial porosity of a sample under electric explosion loading

A new variant of a scaling hypothesis and a fundamental equation of state based on it

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