Stability of multi-core MgB2/Ti/Cu/SS wires

被引：12

作者：

Kovac, P. ^{[1
]}

Martinez, E. ^{[2
]}

Melisek, T. ^{[1
]}

Kopera, L. ^{[1
]}

Husek, I. ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Elect Engn, Bratislava 84104, Slovakia

[2] Univ Zaragoza, Inst Ciencia Mat Aragon, CSIC, Zaragoza 50018, Spain

来源：

CRYOGENICS | 2011年 / 51卷 / 01期

关键词：

MgB2; wire; Resistance; I-V curves; Transport currents; n-Exponents; Minimum quench energy; Normal zone propagation velocity; MGB2; WIRES;

D O I：

10.1016/j.cryogenics.2010.10.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Stability of 19-filaments MgB2/Ti/Cu/SS wires carrying the transport currents has been examined. Properties of two identical wires annealed at 600 degrees C/2.5 h and 800 degrees C/0.5 h were compared. It was found that annealing conditions influence not only the current carrying capacity of MgB2 filaments but also affect the inter-diffusion at Ti/Cu and Cu/SS interfaces, which is worsening the electrical and thermal conductivities of composite elements. Consequently, differences in wire's resistances and I-V quenches were measured, which are correlating well with experimentally estimated minimum quench energy and normal zone propagation velocity. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：16 / 20

页数：5

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