Effect of boron purity on superconducting properties of SiC doped MgB2

被引：0

作者：

Bo Qu ^{[1
]}

Sun, Xudong ^{[1
]}

Xiu, Zhimeng ^{[1
]}

Kim, Jung Ho ^{[2
]}

Dou, Shixue ^{[2
]}

Liu, Yinong ^{[3
]}

Kai Duan ^{[3
]}

机构：

[1] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Ministry Educ, Shenyang 110004, Peoples R China

[2] Univ Wollongong, Inst Supercond & Elect, Wollongong, NSW 2522, Australia

[3] Univ Western Australia, Sch Mech Engn, Perth, WA 6009, Australia

来源：

STRUCTURAL INTEGRITY AND FAILURE | 2008年 / 41-42卷

基金：

中国国家自然科学基金;

关键词：

superconductor; magnesium diboride; purity; amorphous boron; hot pressing; critical current density;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of purity of amorphous boron raw materials on properties of the hot pressed SiC doped MgB2 superconductor was investigated. MgB2 superconductors with magnetic J(c) over 10(6) A/cm(2) and remaining J(c) of 10(5) A/CM2 at 4.2 K and 5 T were fabricated by hot pressing using both high purity (99.00%) and low purity (88.84%) boron powders. XRD analysis shows that purity of the boron powders has little effect on phase component of the MgB2 samples. If the main impurity in amorphous boron is Mg, low purity low cost boron powder is suitable as one of the raw materials for fabricating MgB2. Particle sizes of boron has significant effect on microstructure and properties of MgB2. Smaller boron particle size leads to smaller grain size of MgB2, higher density, higher lattice distortion, and thus higher magnetic J(c).

引用

页码：253 / +

页数：2

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