Electric conductivity measurement of oxides melts

Poznyak, I. V.; Pechenkov, A. Yu.; Shatunov, Alexey N.

doi:10.22364/mhd.43.2.10

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Once the local temperature exceeds melting point, sample begins to melt locally. Since the resistivity of liquid melt is much lower than that of solid phase [64], electric current preferentially flows through melt, and further melting would be accelerated, finally forming a melt trace. It is easier for the surface to melt than inside because the sample surface has a higher defect concentration and no restriction on volume expansion during melting.…”

Section: Resultsmentioning

confidence: 99%

Flash sintering of hydroxyapatite ceramics

Hwang

Yun

2020

Journal of Asian Ceramic Societies

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The flash sintering process has been regarded as a noble method to densify ceramic materials. The distinctive feature of the flash sintering is the reduced sintering time which is caused by the electric field. In this study, flash sintering of the hydroxyapatite bioceramics was carried out at temperatures of 900-1200°C and electric fields of 500-1200 V/cm. Dense sintered sample was prepared in a short time within 10 seconds. Electric field required for flashing became reduced as the furnace temperature increased. Abrupt rise of the sample temperature of up to 120°C was observed when the flash occurred. The incubation time for flashing became shorter with increasing temperature and electric field. The flashing was found to occur at lower temperature and lower electric field in vacuum than in air. Microstructure of the flash sintered sample was not different from that of conventionally sintered sample.

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Section: Resultsmentioning

confidence: 99%

Flash sintering of hydroxyapatite ceramics

Hwang

Yun

2020

Journal of Asian Ceramic Societies

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“…-The dependence of the properties of the trap elements on temperature; -Heat exchange by radiation; -Convective heat exchange between the external surfaces of the model and the environment. Some properties of corium during computer modeling were used according to literary sources [22][23]. It should be noted that due to shortages of data about dependence of the coefficient of thermal conductivity of corium on temperature, its value was set as a constant.…”

Section: Object Statement Of Decay Heat Modelingmentioning

confidence: 99%

Modeling the process of decay heat imitation in the corium at the «Lava-B» facility

Толеубеков

Baklanov

Akaev

et al. 2022

RCPh

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Б» [2]. Способом компьютерного моделирования получены основные параметры системы кориумнагреватель для каждого из выбранных методов и определены границы их применимости для имитации остаточного энерговыделения при проведении эксперимента на установке.

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“…The issue occurs when the measurement system is supposed to have a real-time response, because several different setups of mathematical model needs to be calculated regarding the inverse problem solution. In addition to that, at least two approaches should be implemented to be able to provide the solution in a full measuring scale [3].…”

Section: Introductionmentioning

confidence: 99%

Application of neural network for real-time measurement of electrical resistivity in cold crucible

Votava

Poznyak

2017

Journal of Electrical Engineering

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The article describes use of an Induction furnace with cold crucible as a tool for real-time measurement of a melted material electrical resistivity. The measurement is based on an inverse problem solution of a 2D mathematical model, possibly implementable in a microcontroller or a FPGA in a form of a neural network. The 2D mathematical model results has been provided as a training set for the neural network. At the end, the implementation results are discussed together with uncertainty of measurement, which is done by the neural network implementation itself.

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Electric conductivity measurement of oxides melts

Cited by 4 publications

References 7 publications

Flash sintering of hydroxyapatite ceramics

Flash sintering of hydroxyapatite ceramics

Modeling the process of decay heat imitation in the corium at the «Lava-B» facility

Application of neural network for real-time measurement of electrical resistivity in cold crucible

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