Pokrokový MgB2 supravodič bez difúznej bariéry
Advanced MgB2 superconductor without diffusion barrier
Program: VEGA
Project leader: Ing. Kováč Pavol DrSc.
Annotation: The essence of the project is to prepare and optimize the method of preparation of superconducting composite wire (filaments) by the method of magnesium infiltration or diffusion into boron. The main emphasis will be focused on the simplicity of preparation (without the diffusion barrier), the availability and suitability of the sheath materials and their electro-mechanical properties. The properties of the MgB2 superconducting core will be controlled by technological preparation, annealing conditions, and possible doping. Selection of suitable materials and technological processes allows monitoring of effects on micro-structure, mechanical properties and superconductive properties: critical current density at temperatures in the range of 4.2 – 20 K, critical temperature, connectivity or losses in alternating magnetic field. The role of the project will be also to examine the possibility of creating superconducting links.
Duration: 1.1.2020 – 31.12.2021
Supravodivé vinutia z homogénnych MgB2 drôtov s trubičkovými vláknami
Superconducting coils made of uniform MgB2 wires with tubular filaments
Program: SRDA
Project leader: Ing. Kováč Pavol DrSc.
Annotation: The aim of this project is to develop the process of infiltration/diffusion (IMD) for long and uniform superconducting wires with tubular MgB2 filaments resulting in high engineering current densities measured in coils cooled by solid nitrogen in persistent mode. The main aim is to increase three times the engineering current density in long IMD MgB2 wires in comparison to those commercially obtained by powder-in-tube (PIT) process, especially in the range of magnetic fields 1-5T and temperatures around 20K
Duration: 1.7.2019 – 30.11.2021