Effect of processing variables on the reaction kinetics of MgB2 fibers

John D. Defouw, David C. Dunand

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The reaction kinetics for converting B fibers into MgB2 fibers are measured by in situ synchrotron X-ray diffraction and ex situ by metallography as a function of the following processing variables: fiber diameter, fiber doping, fiber surface treatment, Mg flux (liquid or gaseous Mg), and thermal cycling. Changes to the fiber diameter, surface treatment and Mg flux affect little the rates of the reaction, while C-doping of fibers dramatically decreases reaction rate and thermal cycling increases the reaction rate.

Original languageEnglish (US)
Pages (from-to)648-653
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number15-16
DOIs
StatePublished - Aug 1 2010

Keywords

  • Magnesium diboride
  • Reaction kinetics
  • Thermal cycling
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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