Transport current densities of MgB2 wire, cable and continually transposed conductor

被引：25

作者：

Husek, I. ^{[1
]}

Kovac, P. ^{[1
]}

Melisek, T. ^{[1
]}

Kopera, L. ^{[1
]}

机构：

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

来源：

CRYOGENICS | 2009年 / 49卷 / 07期

关键词：

MgB2; Cables; Critical current density; Current degradation; SITU; MAGNETS; POWDER; TAPES; EX;

D O I：

10.1016/j.cryogenics.2009.05.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Multi-core MgB2 wire, cable and continually transposed conductor (CTC) have been assembled from a single-core in situ made Ti/Cu sheathed composite. It was shown that the filament's current densities J(c) of composed wire, cable and CTC are comparable, but the engineering current densities J(e) and the window current densities J(w), are much different. MgB2 cable shows apparently lower sensitivity to bending strain than monolithic wire. Instead of the highest J(w) for CTC, it offer also high surface to volume ratio, which is important parameter for efficient cooling and thermal stability. The measurement of the resistance to tensile strain has shown the best performance for monolithic wire and the lowest irreversible strain for CTC. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：366 / 370

页数：5

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