Comparative studies of nanoscale SiC whisker and Si/N/C doped MgB 2 taoes

Xianping Zhang, Yanwei Ma, Zhaoshun Gao, Dongliang Wang, Zhengguang Yu, G. Nishijima, K. Watanabe, Jiandong Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fe-sheathed MgB2 tapes were prepared by the in situ powder-in-tube (PIT) technique using nanoscale Si/N/C and SiC whisker as doping materials, respectively. It is found that the doped tapes exhibited superior field performance and higher critical current (JC) values than the undoped tapes in the magnetic field up to 12 T. Moreover, the improvement of JC for the SiC whisker doped samples was more significantly than that in Si/N/C doped tapes, while flux pinning ability enhancements were similar. It is proposed that the difference of impurity content in MgB2 matrix, which affects the grain connectivity, is responsible for JC value difference between Si/N/C and SiC whisker doped samples.

Original languageEnglish
Title of host publicationProgress in Light Metals, Aerospace Materials and Superconductors
PublisherTrans Tech Publications Ltd
Pages2041-2045
Number of pages5
EditionPART 4
ISBN (Print)0878494324, 9780878494323
DOIs
Publication statusPublished - 2007 Jan 1
Event2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006 - Beijing, China
Duration: 2006 Jun 252006 Jun 30

Publication series

NameMaterials Science Forum
NumberPART 4
Volume546-549
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other2006 Beijing International Materials Week, 2006 BIMW - International Conference on Superconducting Materials, ICSM 2006
CountryChina
CityBeijing
Period06/6/2506/6/30

Keywords

  • Doping
  • Mechanism
  • MgB
  • Superconductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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