Low temperature preparation of MgB2 tapes using mechanically alloyed powder

被引：0

作者：

Hässler, W ^{[1
]}

Rodig, C ^{[1
]}

Fischer, C ^{[1
]}

Holzapfel, B ^{[1
]}

Perner, O ^{[1
]}

Eckert, J ^{[1
]}

Nenkov, K ^{[1
]}

Fuchs, G ^{[1
]}

机构：

[1] Leibniz Inst Solid State & Mat Res Dresden, D-01171 Dresden, Germany

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2003年 / 16卷 / 02期

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D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Instead of commercially available MgB2 powder, we have used partially reacted powder prepared by mechanical alloying. This precursor powder consists of grains with a size of only a few nanometres and contains reacted MgB2, and also the starting material Mg and B, and is, therefore, more reactive than fully reacted commercial powders. Using copper as a sheath material, tapes were prepared by the usual powder-in-tube process. After annealing at relatively low temperatures (770-870 K) in inert atmosphere, the tapes have good superconducting properties. Magnetically we have measured a critical current density of 400 kA cm(-2) at 4.2 K.

引用

页码：281 / 284

页数：4

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