NEW A15 NB3(AL, GE) TAPE PREPARED FROM SIGMA-PHASE POWDER

被引：7

作者：

TACHIKAWA, K

SAKINADA, K

KOBAYASHI, M

机构：

[1] Faculty of Engineering, Tokai University, Kanagawa, 259-12, 1117 Kitakaname, Hiratuka

来源：

CRYOGENICS | 1993年 / 33卷 / 11期

关键词：

SUPERCONDUCTING TAPES; NB3(AL; GE); MATERIAL PROPERTIES;

D O I：

10.1016/0011-2275(93)90216-B

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An A15 Nb3(Al0.8, Ge0.2) tape has been prepared by a reaction between sigma-phase Nb2(Al, Ge) and Nb powders. Fabrication of the tape using a Nb sheath was quite successful. The superconducting properties and structure of the newly prepared Nb3(Al, Ge) tape were studied. Finer sigma-phase and Nb starting powders yield a pronounced improvement in J(c) at magnetic fields from 10 to 23 T. A J(c) of > 2.5 X 10(4) A cm-2 has been obtained at 21.5 T and 4.2 K. The addition of MgO powder is effective for enhancing J(c) and reducing the peak effect.

引用

页码：1091 / 1094

页数：4

共 8 条

[1] DEVELOPMENT OF 10KA CLASS NB3AL SUPERCONDUCTING CABLE BY JELLY-ROLL PROCESS [J].