Effect of aromatic hydrocarbon addition on in situ powder-in-tube processed MgB2 tapes

被引：132

作者：

Yamada, H

Hirakawa, M

Kumakura, H

Kitaguchi, H

机构：

[1] Cent Japan Railway Co, Div Gen Technol, Komaki, Aichi 4850801, Japan

[2] Cent Japan Railway Co, Construct Dept, Minato Ku, Tokyo 1088204, Japan

[3] Natl Inst Mat Sci, Superconducting Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2006年 / 19卷 / 02期

关键词：

D O I：

10.1088/0953-2048/19/2/004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We fabricated in situ powder-in-tube processed MgB2/Fe tapes using the aromatic hydrocarbons benzene, naphthalene, and thiophene as additives, and investigated the superconducting proper-ties. We found that these aromatic hydrocarbons were very effective for increasing the J(c) values. The J(c) values of 20 mol% benzene-added tapes reached 130 A mm(-2) at 4.2 K and 10 T. This value was almost comparable to that of 10 mol% SiC-added tapes and about four times higher than that of tapes with no additions. Microstructural analyses suggest that this J(c) enhancement is due to both the substitution of carbon for boron in MgB2 and the smaller MgB2 grain size.

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收藏

页码：175 / 177

页数：3

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