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In-situ MgB2/Fe tapes were fabricated by the powder in tube (PIT) technology using Mg and B powders. The tapes were sintered by both an advanced spark plasma sintering (SPS) and a conventional vacuum furnace, respectively. The effects of these two sintering routes on the properties of the MgB2 tapes were investigated by the analysis of XRD, SEM and the magnetic J(c) measurements. It was shown that at 10K, 0T, the magnetic J(c) value of the tape sintered using SPS machine at 800 degrees C for 15min under 30MPa were close to 10(6)A/cm(2), which was higher than that of the tapes annealed at 700 degrees C for 2h under pressureless vacuum condition. It was found that the density and the homogeneity of the MgB2 core were strongly improved using SPS sintering process, which explained why the MgB2 tapes sintered by SPS method have a higher J(c) value. Further enhancement of J(c) in the tapes is expected for the understanding of the SPS sintering mechanism.
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2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4: MAGNESIUM
ISSN: 0255-5476
Year: 2007
Volume: 546-549
Page: 2059-,
Language: English
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2