Influence of heat-treatment and element doping on critical current density of MgB2/Fe/Cu wires fabricated by in-situ PIT technique

Qingyang Wang; Pingxiang Zhang; Jinshan Li; Guo Yan; Yafeng Lu

Influence of heat-treatment and element doping on critical current density of MgB₂/Fe/Cu wires fabricated by in-situ PIT technique

Qingyang Wang, Pingxiang Zhang, Jinshan Li, Guo Yan, Yafeng Lu

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Ti, Zr-doped dense MgB₂/Fe/Cu wires were successfully fabricated adopting the in-situ powder-in-tube (PIT) method using low carbon steel sheath. The short samples wires were sintered at 650-850°C for 2-5 h in argon. Critical current density (J_c) of the wires was measured at 4.2 K in the magnetic field up to 8 T by standard four probe method. High J_c values of 2.1 × 10⁵A/cm² were obtained in 3 T at 4.2 K for MgB₂/Fe/Cu wires. Mg_0.9Zr_0.1B₂/Fe/Cu wires sintered at 800°C heat the highest J_c. The microstructure observation for wires showed that MgB₂/Fe/Cu wires have better grain connectivity and higher density compared to MgB₂ bulk samples. The J_c can be further improved to meet the requirement for applications by optimizing the process conditions.

Original language	English
Pages (from-to)	977-980
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	36
Issue number	6
State	Published - Jun 2007

Keywords

Critical current density
Element doping
In-situ fabrication
MgB wires

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title = "Influence of heat-treatment and element doping on critical current density of MgB2/Fe/Cu wires fabricated by in-situ PIT technique",

abstract = "Ti, Zr-doped dense MgB2/Fe/Cu wires were successfully fabricated adopting the in-situ powder-in-tube (PIT) method using low carbon steel sheath. The short samples wires were sintered at 650-850°C for 2-5 h in argon. Critical current density (Jc) of the wires was measured at 4.2 K in the magnetic field up to 8 T by standard four probe method. High Jc values of 2.1 × 105A/cm2 were obtained in 3 T at 4.2 K for MgB2/Fe/Cu wires. Mg0.9Zr0.1B2/Fe/Cu wires sintered at 800°C heat the highest Jc. The microstructure observation for wires showed that MgB2/Fe/Cu wires have better grain connectivity and higher density compared to MgB2 bulk samples. The Jc can be further improved to meet the requirement for applications by optimizing the process conditions.",

keywords = "Critical current density, Element doping, In-situ fabrication, MgB wires",

author = "Qingyang Wang and Pingxiang Zhang and Jinshan Li and Guo Yan and Yafeng Lu",

year = "2007",

month = jun,

language = "英语",

volume = "36",

pages = "977--980",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Influence of heat-treatment and element doping on critical current density of MgB2/Fe/Cu wires fabricated by in-situ PIT technique

AU - Wang, Qingyang

AU - Zhang, Pingxiang

AU - Li, Jinshan

AU - Yan, Guo

AU - Lu, Yafeng

PY - 2007/6

Y1 - 2007/6

N2 - Ti, Zr-doped dense MgB2/Fe/Cu wires were successfully fabricated adopting the in-situ powder-in-tube (PIT) method using low carbon steel sheath. The short samples wires were sintered at 650-850°C for 2-5 h in argon. Critical current density (Jc) of the wires was measured at 4.2 K in the magnetic field up to 8 T by standard four probe method. High Jc values of 2.1 × 105A/cm2 were obtained in 3 T at 4.2 K for MgB2/Fe/Cu wires. Mg0.9Zr0.1B2/Fe/Cu wires sintered at 800°C heat the highest Jc. The microstructure observation for wires showed that MgB2/Fe/Cu wires have better grain connectivity and higher density compared to MgB2 bulk samples. The Jc can be further improved to meet the requirement for applications by optimizing the process conditions.

AB - Ti, Zr-doped dense MgB2/Fe/Cu wires were successfully fabricated adopting the in-situ powder-in-tube (PIT) method using low carbon steel sheath. The short samples wires were sintered at 650-850°C for 2-5 h in argon. Critical current density (Jc) of the wires was measured at 4.2 K in the magnetic field up to 8 T by standard four probe method. High Jc values of 2.1 × 105A/cm2 were obtained in 3 T at 4.2 K for MgB2/Fe/Cu wires. Mg0.9Zr0.1B2/Fe/Cu wires sintered at 800°C heat the highest Jc. The microstructure observation for wires showed that MgB2/Fe/Cu wires have better grain connectivity and higher density compared to MgB2 bulk samples. The Jc can be further improved to meet the requirement for applications by optimizing the process conditions.

KW - Critical current density

KW - Element doping

KW - In-situ fabrication

KW - MgB wires

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M3 - 文章

AN - SCOPUS:34547785646

SN - 1002-185X

VL - 36

SP - 977

EP - 980

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Influence of heat-treatment and element doping on critical current density of MgB₂/Fe/Cu wires fabricated by in-situ PIT technique

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