High Density MgB2 Obtained by Reactive Liquid Mg Infiltration

TL;DR

This paper introduces a cost-effective method for producing high-density MgB2 superconductors using reactive liquid Mg infiltration, achieving significant current densities without high-pressure equipment.

Contribution

The study presents a novel reactive infiltration technique for sintering MgB2, enabling large bulk production at low cost and high performance.

Findings

Achieved a transport current density of 3 kA/cm2 at 4.2K and 9 T.

Developed a scalable, inexpensive manufacturing process.

Identified key technological factors for successful MgB2 synthesis.

Abstract

A new route to the sintering of MgB2 has been identified, based on a reactive infiltration of liquid Mg on a powdered B preform. The technique allows to obtain large bulk manufacts in an inexpensive way, without the need of high pressure apparatus. The best of the obtained samples shows a transport current density of 3 kA/cm2 at 4.2K and 9 T. The critical aspects of the technology are presented, together with the recent achievements and the perspective applications.