Synthesis, Structure, and Properties of Superconductors under the Action of Plasma Shock Waves
- Authors: Mikhailov B.P.1, Nikulin V.Y.2, Mikhailova A.B.1, Silin P.V.2, Borovitskaya I.V.1, Shamray V.F.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Lebedev Physical Institute, Russian Academy of Sciences
- Issue: Vol 10, No 3 (2019)
- Pages: 512-516
- Section: Effects of Energy Fluxes on Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/207901
- DOI: https://doi.org/10.1134/S2075113319030262
- ID: 207901
Cite item
Abstract
Abstract—The capabilities of synthesis and compaction of a MgB2 compound from a mixture of magnesium and boron powders in a metal casing and on a multilayered tape under the action of a submicrosecond shock wave (SW) generated by the interaction of a high-speed cumulative plasma jet with a solid target are studied. The optimal power of a SW pulse and also the distance between a sample and a plasma anode and the number of plasma pulses are determined. The effect of plasma SW action on the MgB2 structure and superconducting properties is studied. It is assumed that, as a result of the plasma SW action, point defects (vacancies and interstitial atoms) form in a superconducting matrix. The possibility of SW-induced synthesis of MgB2 from a mixture of magnesium and boron powders is demonstrated, and an increase in the critical current of the superconductor in an external magnetic field of 2 to 5 T after the plasma SW action is found. The increase in the critical current of high-temperature superconducting tapes under the SW action is explained by an increase in the density of superconducting interlayers, their homogenization, granulating of grains, and strengthening of grain-boundary bonds at the interface with the metal casing.
About the authors
B. P. Mikhailov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Author for correspondence.
Email: borismix@yandex.ru
Russian Federation, Moscow, 119334
V. Ya. Nikulin
Lebedev Physical Institute, Russian Academy of Sciences
Email: borismix@yandex.ru
Russian Federation, Moscow, 119991
A. B. Mikhailova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: borismix@yandex.ru
Russian Federation, Moscow, 119334
P. V. Silin
Lebedev Physical Institute, Russian Academy of Sciences
Email: borismix@yandex.ru
Russian Federation, Moscow, 119991
I. V. Borovitskaya
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: borismix@yandex.ru
Russian Federation, Moscow, 119334
V. F. Shamray
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: borismix@yandex.ru
Russian Federation, Moscow, 119334