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논문 기본 정보

자료유형
학술저널
저자정보
Illarion Leonidovich Nikulin (Perm National Research Polytechnic University) Vitalii Anatolevich Demin (Perm National Research Polytechnic University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.9
발행연도
2022.9
수록면
2,166 - 2,179 (14page)
DOI
10.1007/s12540-021-01131-2

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This article refers to the problem of the formation of oxide films during induction melting. The mutual influence of theforced convection of the melt in an alternating electromagnetic field and the elastic-stress state of the dielectric film on thesurface are considered. The assumptions of the mathematical model, governing equations and film properties are discussedin detail. The mechanisms that can create mechanical stresses in the film are considered, and it is shown that the greatestcontribution to stresses comes from viscous forces arising from the movement of the melt under the film. The influence ofelectromagnetic field frequency (its non-dimensional analogue) on melt flows is investigated numerically, it is shown howthese flows deform films of different configurations. It was found that there are ranges of parameters, such as the frequencyof the magnetic field (and its spatial distribution), at which films of certain sizes are in stable equilibrium. On the plane ofparameters frequency and film size the maps of film deformation are plotted, from which one can see favourable and unfavourableregimes in terms of formation and stability of the surface dielectric films.

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