Effects of metal powder addition on the critical current in MgB2 tapes

被引：36

作者：

Tachikawa, K ^{[1
]}

Yamada, Y ^{[1
]}

Suzuki, O ^{[1
]}

Enomoto, M ^{[1
]}

Aodai, M ^{[1
]}

机构：

[1] Tokai Univ, Fac Engn, Kanagawa 2591292, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 382卷 / 01期

关键词：

MgB2; powder in tube method; metal powder addition; in addition; critical current density;

D O I：

10.1016/S0921-4534(02)01207-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

MgB2 commercial powder was encased in a Ni sheath and fabricated into a monocore tape. Different kinds of metal powder, i.e., Ag, Ni, Cu, In and Sn, were mixed with the MgB2 powder. The addition of low melting point metal powder, especially In, has been found to enhance appreciably the J(c) in MgB2 tapes. The annealing at a low temperature yields further increase in the J(c) of tapes with In addition. The enhancement in J(c) by the In addition and the low temperature annealing reaches a factor of five. The In addition may improve the linkage among MgB2 grains, which provides the improvement in J(c) and avoids a sintering treatment at high temperatures. The optimum amount of In addition to the MgB2 core seems to be about 10 vol%. The effect of other metal powder addition is also described. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：108 / 112

页数：5

共 7 条

[1] Superconductivity of powder-in-tube MgB2 wires [J].

Glowacki, BA ;

Majoros, M ;

Vickers, M ;

Evetts, JE ;

Shi, Y ;

McDougall, I .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (04) :193-199

[2] Large transport critical currents in unsintered MgB2 superconducting tapes [J].

Grasso, G ;

Malagoli, A ;

Ferdeghini, C ;

Roncallo, S ;

Braccini, V ;

Siri, AS ;

Cimberle, MR .

APPLIED PHYSICS LETTERS, 2001, 79 (02) :230-232

[3] High transport critical current density obtained for powder-in-tube-processed MgB2 tapes and wires using stainless steel and Cu-Ni tubes [J].

Kumakura, H ;

Matsumoto, A ;

Fujii, H ;

Togano, K .

APPLIED PHYSICS LETTERS, 2001, 79 (15) :2435-2437

[4] Superconductivity at 39 K in magnesium diboride [J].

Nagamatsu, J ;

Nakagawa, N ;

Muranaka, T ;

Zenitani, Y ;

Akimitsu, J .

NATURE, 2001, 410 (6824) :63-64

[5] Electronic anisotropy, magnetic field-temperature phase diagram and their dependence on resistivity in c-axis oriented MgB2 thin films [J].

Patnaik, S ;

Cooley, LD ;

Gurevich, A ;

Polyanskii, AA ;

Jing, J ;

Cai, XY ;

Squitieri, AA ;

Naus, MT ;

Lee, MK ;

Choi, JH ;

Belenky, L ;

Bu, SD ;

Letteri, J ;

Song, X ;

Schlom, DG ;

Babcock, SE ;

Eom, CB ;

Hellstrom, EE ;

Larbalestier, DC .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (06) :315-319

[6] High-transport critical current density above 30 K in pure Fe-clad MgB2 tape [J].

Soltanian, S ;

Wang, XL ;

Kusevic, I ;

Babic, E ;

Li, AH ;

Qin, MJ ;

Horvat, J ;

Liu, HK ;

Collings, EW ;

Lee, E ;

Sumption, MD ;

Dou, SX .

PHYSICA C, 2001, 361 (02) :84-90

[7]

YAMASAKI H, 1990, ADV CRYOG ENG A, V36, P343

← 1 →