Transport and structural properties of MgB2/Fe wires produced by redesigning internal Mg diffusion process

Yetis H., Avci D., Karaboga F., AKSOY C., Gajda D., Martinez E., ...Daha Fazla

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, cilt.35, sa.4, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1088/1361-6668/ac5339
  • Dergi Adı: SUPERCONDUCTOR SCIENCE & TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: MgB2 wire, IMD, PIT, boron, CRITICAL-CURRENT DENSITY, FABRICATION, POWDER, BORON
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

We report transport, electromechanical, and structural properties of single core MgB2/Fe wire produced using a new fabrication method, called designed internal Mg diffusion (IMD) process, which relies on the use of non-stoichiometric Mg + B pellets with excess Mg in place of a central Mg rod used in the standard IMD method. Structural analysis revealed the successful formation of a porous MgB2 structure in the center and a dense circular MgB2 layer surrounding this structure in the designed-IMD wire. Fast transport I-V measurements showed that the designed IMD method increased engineering critical current density (J (e)) up to twice that of the IMD wires in self-field. The central porous MgB2 structure shared the applied current and indirectly behaved as an internal stabilizer against quench damage at high applied currents.