Comparison of SiC and/or toluene additives to the critical current density of internal Mg diffusion-processed MgB2 wires

S. J. Ye, M. Song, A. Matsumoto, K. Togano, M. Takeguchi, H. Kumakura, Ryo Teranishi, T. Kiyoshi

Research output: Contribution to journalArticle

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Abstract

The internal Mg diffusion (IMD) process produces a MgB2 layer with higher density than that achieved with the traditional Powder-in-tube (PIT) method; this makes the IMD process an attractive one for the fabrication of superconducting MgB2 wires with higher critical current densities (Jc). We have recently shown that co-addition of SiC and some liquid aromatic hydrocarbons (toluene and dimethylbenzene) can enhance the J c of IMD-processed mono-core MgB2 wires. In the present contribution, we discuss the Jc of the IMD-processed mono-core MgB2 wires fabricated under different conditions, viz. with pure B powder, B powder with additive-like SiC or toluene, and B powder with SiC + toluene co-addition. The results from these samples indicated that the SiC + toluene co-addition gave the best Jc value, as in the previous results. The composition and microstructure suggested that carbon substitution for boron and reductions of grain size by SiC and/or toluene additives are responsible for the Jc enhancements of IMD-processed MgB2 wires.

Original languageEnglish
Pages (from-to)167-170
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume484
DOIs
Publication statusPublished - Jan 15 2013

Fingerprint

Toluene
toluene
critical current
Powders
wire
Wire
current density
Cable cores
Superconducting wire
Aromatic Hydrocarbons
Xylenes
Boron
Aromatic hydrocarbons
boron
Substitution reactions
Carbon
hydrocarbons
grain size
substitutes
tubes

All Science Journal Classification (ASJC) codes

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

Cite this

Comparison of SiC and/or toluene additives to the critical current density of internal Mg diffusion-processed MgB2 wires. / Ye, S. J.; Song, M.; Matsumoto, A.; Togano, K.; Takeguchi, M.; Kumakura, H.; Teranishi, Ryo; Kiyoshi, T.

In: Physica C: Superconductivity and its applications, Vol. 484, 15.01.2013, p. 167-170.

Research output: Contribution to journalArticle

Ye, S. J. ; Song, M. ; Matsumoto, A. ; Togano, K. ; Takeguchi, M. ; Kumakura, H. ; Teranishi, Ryo ; Kiyoshi, T. / Comparison of SiC and/or toluene additives to the critical current density of internal Mg diffusion-processed MgB2 wires. In: Physica C: Superconductivity and its applications. 2013 ; Vol. 484. pp. 167-170.
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