MgB2/Fe superconducting tapes made using mechanically milled powders in Ar and H2 atmospheres

T. Kondo; P. Badica; Y. Nakamori; S. Orimo; K. Togano; G. Nishijima; K. Watanabe

doi:10.1016/j.physc.2005.02.104

MgB₂/Fe superconducting tapes made using mechanically milled powders in Ar and H₂ atmospheres

T. Kondo, P. Badica, Y. Nakamori, S. Orimo, K. Togano, G. Nishijima, K. Watanabe

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

13 Citations (Scopus)

Abstract

Fe-sheathed tapes of MgB₂ with addition of SiC have been prepared by the powder-in-tube (PIT) method using a powder mixture mechanically milled in an argon or hydrogen atmosphere. The reactivity of the component powders in the mixtures, Mg, B and SiC, was significantly enhanced by mechanical milling, so that MgB₂ formed faster than in tapes fabricated from a hand-milled mixture. At the same time the number of impurity phases was higher, and the impurity phases of Mg₂Si and Fe₂B were observed only in these tapes. Mechanical milling also induced a lower quality of MgB ₂, especially for tapes produced from powders milled in a hydrogen atmosphere, with a significant influence on the values of the critical temperature T_C and critical field, J_C.

Original language	English
Pages (from-to)	1231-1237
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	II
DOIs	https://doi.org/10.1016/j.physc.2005.02.104
Publication status	Published - 2005
Event	Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity - Duration: 2004 Nov 23 → 2004 Nov 25

Keywords

J
Mechanical milling
MgB-tapes
Microstructure
Reactivity

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2005.02.104

Cite this

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title = "MgB2/Fe superconducting tapes made using mechanically milled powders in Ar and H2 atmospheres",

abstract = "Fe-sheathed tapes of MgB2 with addition of SiC have been prepared by the powder-in-tube (PIT) method using a powder mixture mechanically milled in an argon or hydrogen atmosphere. The reactivity of the component powders in the mixtures, Mg, B and SiC, was significantly enhanced by mechanical milling, so that MgB2 formed faster than in tapes fabricated from a hand-milled mixture. At the same time the number of impurity phases was higher, and the impurity phases of Mg2Si and Fe2B were observed only in these tapes. Mechanical milling also induced a lower quality of MgB 2, especially for tapes produced from powders milled in a hydrogen atmosphere, with a significant influence on the values of the critical temperature TC and critical field, JC.",

keywords = "J, Mechanical milling, MgB-tapes, Microstructure, Reactivity",

author = "T. Kondo and P. Badica and Y. Nakamori and S. Orimo and K. Togano and G. Nishijima and K. Watanabe",

note = "Copyright: Copyright 2019 Elsevier B.V., All rights reserved.; Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity ; Conference date: 23-11-2004 Through 25-11-2004",

year = "2005",

doi = "10.1016/j.physc.2005.02.104",

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TY - JOUR

T1 - MgB2/Fe superconducting tapes made using mechanically milled powders in Ar and H2 atmospheres

AU - Kondo, T.

AU - Badica, P.

AU - Nakamori, Y.

AU - Orimo, S.

AU - Togano, K.

AU - Nishijima, G.

AU - Watanabe, K.

PY - 2005

Y1 - 2005

N2 - Fe-sheathed tapes of MgB2 with addition of SiC have been prepared by the powder-in-tube (PIT) method using a powder mixture mechanically milled in an argon or hydrogen atmosphere. The reactivity of the component powders in the mixtures, Mg, B and SiC, was significantly enhanced by mechanical milling, so that MgB2 formed faster than in tapes fabricated from a hand-milled mixture. At the same time the number of impurity phases was higher, and the impurity phases of Mg2Si and Fe2B were observed only in these tapes. Mechanical milling also induced a lower quality of MgB 2, especially for tapes produced from powders milled in a hydrogen atmosphere, with a significant influence on the values of the critical temperature TC and critical field, JC.

AB - Fe-sheathed tapes of MgB2 with addition of SiC have been prepared by the powder-in-tube (PIT) method using a powder mixture mechanically milled in an argon or hydrogen atmosphere. The reactivity of the component powders in the mixtures, Mg, B and SiC, was significantly enhanced by mechanical milling, so that MgB2 formed faster than in tapes fabricated from a hand-milled mixture. At the same time the number of impurity phases was higher, and the impurity phases of Mg2Si and Fe2B were observed only in these tapes. Mechanical milling also induced a lower quality of MgB 2, especially for tapes produced from powders milled in a hydrogen atmosphere, with a significant influence on the values of the critical temperature TC and critical field, JC.

KW - J

KW - Mechanical milling

KW - MgB-tapes

KW - Microstructure

KW - Reactivity

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