Using Fast Hot Shock Wave Consolidation Technology to Produce Superconducting MgB2

Abstract

The original hot shock wave assisted consolidation method combining high temperature was applied with the two-stage explosive process without any further sintering to produce superconducting materials with high density and integrity. The consolidation of MgB2 billets was performed at temperatures above the Mg melting point and up to 1000oC in partially liquid condition of Mg-2B blend powders. The influence of the type of boron (B) isotope in the composition on critical temperature and superconductive properties was evaluated. An example of a hybrid Cu-MgB2–Cu superconducting tube is demonstrated and conclusions are discussed.

On the Nature of Superconducting Precursors in Bi-Pb-Sr-Ca-Cu-O Compositions Fabricated by Hot Shock Wave Consolidation Technology

“…The novelty of the proposed HSWC technology is in the consolidation of bulk samples of high density from superconducting powders of mixtures with the dimensions of the order of ~2-5mm, L~50-70mm. The process of consolidation performed into two stages [5] initial density and for activation of the surface of mixture particles.…”

“…In [2], the intrinsic inhomogeneity of HTSC was increased using the sun melting of samples followed by their superfast quenching at liquid nitrogen temperatures. In current work for the modification of microstructure, introduction of efficient pinning centers and enhancement of intrinsic inhomogeneity of HTSC samples we use the original HSWC technology [5]. In powder mixtures, shock waves lead to an extremely rapid mass transfer and induce high velocity collisions among suspended solid particles.…”

A Study of One-dimensional Weak Shock Propagation Under the Action of Axial and Azimuthal Magnetic Field: An Analytical Approach

“…During the last few decades such nonlinear mathematical models are getting a vital role in the fields of natural, engineering, and medical sciences such as plasma physics, solid-state physics, fluid mechanics, optical fibers, geophysics, biomechanics, etc. and many efforts have been made for confronting the exact and numerical solutions of such physical systems [1][2][3][4][5][6]. Due to the high complexity, finding the exact (closed form) solution of such realistic models is thus a challenging and rigorous task because it comprises many physical and natural intricacies and only in certain cases can we explicitly unravel the solutions.…”