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Effect of boron purity on superconducting properties of SiC doped MgB2

journal contribution
posted on 06.12.2017, 00:00 by B Qu, X Sun, Z Xiu, J Kim, S Dou, Y Liu, Kai DuanKai Duan
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 Jc over 106A/cm2 and remaining Jc of 105 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 ofMgB2. Smaller boron particle size leads to smaller grain size of MgB2, higher density, higher lattice distortion, and thus higher magnetic Jc.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Issue

41-42

Start Page

253

End Page

258

Number of Pages

6

ISSN

1022-6680

Location

Switzerland

Publisher

Trans Tech Publications,

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Biennial Conference; Dongbei da xue (1993); Institute for Resource Industries and Sustainability (IRIS); University of Western Australia; University of Wollongong;

Era Eligible

Yes

Journal

Advanced materials research.