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Tailored Materials for High‐Performance MgB 2 Wire
Author(s) -
Kim Jung Ho,
Oh Sangjun,
Kumakura Hiroaki,
Matsumoto Akiyoshi,
Heo YoonUk,
Song KyeongSe,
Kang YongMook,
Maeda Minoru,
Rindfleisch Matt,
Tomsic Mike,
Choi Seyong,
Dou Shi Xue
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201101243
Subject(s) - materials science , fabrication , sintering , critical current , boron , nanometre , nanotechnology , superconductivity , carbon fibers , magnesium , metallurgy , composite material , medicine , chemistry , alternative medicine , physics , organic chemistry , pathology , composite number , quantum mechanics
Carbon‐encapsulated crystalline boron nanopowder and coarse magnesium powder are used as inexpensive tailored starting materials for the fabrication of high‐performance MgB 2 superconducting wire. A low sintering temperature leads to a high critical current density, as a result of nanometer‐sized boron powder, surface oxidation preclusion by carbon encapsulation, and grain alignment by elongated magnesium coarse powder.