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Liquid-Phase Shock-Assisted Consolidation of Superconducting MgB2 Composites

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An original two-stage liquid-phase hot explosive compaction (HEC) procedure of Mg-B precursors above 900 C provides the formation of superconductivity MgB2 phase in the whole volume of billets with maximal T c = 38.5 K without any further sintering. The liquid-phase HEC strongly increases the solid-state reaction rate similar to photostimulation, but in this case, due to the high penetrating capability of shock waves in a whole volume of cylindrical billets and consolidation of MgB2 precursors near to theoretical density allows one to produce bulk, long-body cylindrical samples important for a number practical applications.

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Mamniashvili, G., Daraselia, D., Japaridze, D. et al. Liquid-Phase Shock-Assisted Consolidation of Superconducting MgB2 Composites. J Supercond Nov Magn 28, 1925–1929 (2015).

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