MgB2 reactive sintering from the elements

G. Giunchi, S. Ceresara, G. Ripamonti, S. Chiarelli, M. Spadoni

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Abstract

High density MgB2compacts have been obtained without the need of high pressure apparatus. The key features of the sintering technique are based on the Mg liquid infiltration on powdered B preforms. Critical parameters, other than the thermal cycles, are the B powder granularity, the density of the preform and the type of the container. Centimeter-sized samples of different shapes have been obtained and the best transport critical current density, measured so far, is about 3 kA/cm2at T = 4.2 K and B = 9 Tesla for a sample having an overall density of 2.40 g/cm3. Possible applications of the MgB2compacts are foreseeable in bulk superconducting magnets, magnetic screens and superconducting bars of variable resistance.
Original languageEnglish
Pages (from-to)3060 - 3063
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
Publication statusPublished - Jun 2003
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Giunchi, G., Ceresara, S., Ripamonti, G., Chiarelli, S., & Spadoni, M. (2003). MgB2 reactive sintering from the elements. IEEE Transactions on Applied Superconductivity, 13(2 III), 3060 - 3063. https://doi.org/10.1109/TASC.2003.812090