Manufacturing of the Stainless-Steel Sheathed Magnesium Diboride Superconductor Wire

Authors

  • Sigit Dwi Yudanto Research Center for Metallurgy, National Research and Innovation Agency, 15314, Banten, Indonesia
  • Ahmad Sigit Affandi Mechanical Engineering Department, Faculty of Engineering, Universitas Negeri Semarang, Semarang, Jawa Tengah, 50229, Indonesia
  • Azwar Manaf 3Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Jawa Barat, 16424, Indonesia

Abstract

The Powder in Tube (PIT) method was utilized to manufacture the MgB2-based monofilament wire. The ground powders of Mg and B were filled in the stainless-steel tube and went through a cold-rolling process. In order to avoid oxidation, the wire was cut and packed into the stainless-steel tube before sintering at various temperatures (873, 973, and 1073 K). We offer this heating process in a tube as a method that was both practical and efficient. The formation of the MgB2 phase was analyzed using an X-ray diffractometer post-sintering. At the sintering temperature of 973 K, the MgB2 phase was formed which contained small amounts of magnesium oxide. The sample sintered at 973 K showed superconducting properties, with a critical temperature zero (Tc-zero) and onset (Tc-onset) of 34.09 K and 41.33 K, respectively. A large gap between Tc-onset and Tc-zero was indicated by the insufficient fraction of the MgB2 phase that formed. However, MgB2-based superconducting wire was successfully manufactured in the required tube utilizing a vacuum-free heating process and only a small amount of magnesium oxide.

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Published

2023-08-29

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Articles