Preparation and transport Jc(B) properties of Fe-clad MgB2 wires

G. Yan; B. Q. Fu; Y. Feng; C. F. Liu; P. Ji; X. Z. Wu; L. Zhou; L. Z. Cao; K. Q. Ruan; X. G. Li

doi:10.1016/S0921-4534(02)02171-8

Preparation and transport J_c(B) properties of Fe-clad MgB₂ wires

G. Yan, B. Q. Fu, Y. Feng, C. F. Liu, P. Ji, X. Z. Wu, L. Zhou, L. Z. Cao, K. Q. Ruan, X. G. Li

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Long dense MgB₂ wires were successfully fabricated through the in situ powder-in-tube method by using steel sheath with low carbon content. Short samples of MgB₂/Fe wires were sintered at 650-850 °C for 2-5 h in argon. Critical current density (J_c) of the wires was measured in the temperature range of 4.2-30 K in the magnetic field up to 3 T by standard four probe method. High J_c values of 1.3 × 10⁵ A/cm² in self-field and 7.5 × 10⁴ A/cm² in 1 T at 15 K were obtained for MgB₂/Fe wires. The microstructure observation for MgB₂ wires shows that no reaction between Fe and MgB₂ was found and MgB₂/Fe wires have better grain connectivity and higher density than MgB₂ bulk samples. The grain connectivity in wires is better than MgB₂ bulk samples. The results indicate that the J_c can be further improved to meet the requirement for applications by optimizing the process conditions.

Original language	English
Pages (from-to)	607-610
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	386
DOIs	https://doi.org/10.1016/S0921-4534(02)02171-8
State	Published - 15 Apr 2003
Externally published	Yes
Event	ICMC 2002 - Xi an, China Duration: 16 Jun 2002 → 20 Jun 2002

Keywords

In situ fabrication
MgB
Transport J
Wire

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10.1016/S0921-4534(02)02171-8

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title = "Preparation and transport Jc(B) properties of Fe-clad MgB2 wires",

abstract = "Long dense MgB2 wires were successfully fabricated through the in situ powder-in-tube method by using steel sheath with low carbon content. Short samples of MgB2/Fe wires were sintered at 650-850 °C for 2-5 h in argon. Critical current density (Jc) of the wires was measured in the temperature range of 4.2-30 K in the magnetic field up to 3 T by standard four probe method. High Jc values of 1.3 × 105 A/cm2 in self-field and 7.5 × 104 A/cm2 in 1 T at 15 K were obtained for MgB2/Fe wires. The microstructure observation for MgB2 wires shows that no reaction between Fe and MgB2 was found and MgB2/Fe wires have better grain connectivity and higher density than MgB2 bulk samples. The grain connectivity in wires is better than MgB2 bulk samples. The results indicate that the Jc can be further improved to meet the requirement for applications by optimizing the process conditions.",

keywords = "In situ fabrication, MgB, Transport J, Wire",

author = "G. Yan and Fu, {B. Q.} and Y. Feng and Liu, {C. F.} and P. Ji and Wu, {X. Z.} and L. Zhou and Cao, {L. Z.} and Ruan, {K. Q.} and Li, {X. G.}",

year = "2003",

month = apr,

day = "15",

doi = "10.1016/S0921-4534(02)02171-8",

language = "英语",

volume = "386",

pages = "607--610",

journal = "Physica C: Superconductivity and its Applications",

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note = "ICMC 2002 ; Conference date: 16-06-2002 Through 20-06-2002",

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TY - JOUR

T1 - Preparation and transport Jc(B) properties of Fe-clad MgB2 wires

AU - Yan, G.

AU - Fu, B. Q.

AU - Feng, Y.

AU - Liu, C. F.

AU - Ji, P.

AU - Wu, X. Z.

AU - Zhou, L.

AU - Cao, L. Z.

AU - Ruan, K. Q.

AU - Li, X. G.

PY - 2003/4/15

Y1 - 2003/4/15

N2 - Long dense MgB2 wires were successfully fabricated through the in situ powder-in-tube method by using steel sheath with low carbon content. Short samples of MgB2/Fe wires were sintered at 650-850 °C for 2-5 h in argon. Critical current density (Jc) of the wires was measured in the temperature range of 4.2-30 K in the magnetic field up to 3 T by standard four probe method. High Jc values of 1.3 × 105 A/cm2 in self-field and 7.5 × 104 A/cm2 in 1 T at 15 K were obtained for MgB2/Fe wires. The microstructure observation for MgB2 wires shows that no reaction between Fe and MgB2 was found and MgB2/Fe wires have better grain connectivity and higher density than MgB2 bulk samples. The grain connectivity in wires is better than MgB2 bulk samples. The results indicate that the Jc can be further improved to meet the requirement for applications by optimizing the process conditions.

AB - Long dense MgB2 wires were successfully fabricated through the in situ powder-in-tube method by using steel sheath with low carbon content. Short samples of MgB2/Fe wires were sintered at 650-850 °C for 2-5 h in argon. Critical current density (Jc) of the wires was measured in the temperature range of 4.2-30 K in the magnetic field up to 3 T by standard four probe method. High Jc values of 1.3 × 105 A/cm2 in self-field and 7.5 × 104 A/cm2 in 1 T at 15 K were obtained for MgB2/Fe wires. The microstructure observation for MgB2 wires shows that no reaction between Fe and MgB2 was found and MgB2/Fe wires have better grain connectivity and higher density than MgB2 bulk samples. The grain connectivity in wires is better than MgB2 bulk samples. The results indicate that the Jc can be further improved to meet the requirement for applications by optimizing the process conditions.

KW - In situ fabrication

KW - MgB

KW - Transport J

KW - Wire

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U2 - 10.1016/S0921-4534(02)02171-8

DO - 10.1016/S0921-4534(02)02171-8

M3 - 会议文章

AN - SCOPUS:0037445650

SN - 0921-4534

VL - 386

SP - 607

EP - 610

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - ICMC 2002

Y2 - 16 June 2002 through 20 June 2002

ER -

Preparation and transport J_c(B) properties of Fe-clad MgB₂ wires

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