4.8 Article

Internally Oxidized Nb3Sn Strands with Fine Grain Size and High Critical Current Density

Journal

ADVANCED MATERIALS
Volume 27, Issue 8, Pages 1346-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201404335

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Funding

  1. US Department of Energy, Division of High Energy Physics [DE-FG02-95ER40900]
  2. US Department of Energy, Division of High Energy Physics (DOE) [DE-SC0010312]

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Nb3Sn strands fabricated using Nb-Zr alloy can be internally oxidized, provided that oxygen is properly supplied via an oxide powder. This allows the formation of fine intragranular and intergranular ZrO2 particles in a Nb3Sn matrix. These particles can refine the grain size by a factor of three and thereby greatly enhance the Nb3Sn critical current density.

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