Superior critical current density obtained in MgB2 bulks through low-cost carbon-encapsulated boron powder

被引：48

作者：

Barua, Shaon ^{[1
]}

Al Hossain, Md Shahriar ^{[1
]}

Ma, Zongqing ^{[1
]}

Patel, Dipak ^{[1
]}

Mustapic, Mislav ^{[1
]}

Somer, Mehmet ^{[2
]}

Acar, Selcuk ^{[3
]}

Kokal, Ilkin ^{[3
]}

Morawski, Andrzej ^{[4
]}

Cetner, T. ^{[4
]}

Gajda, Daniel ^{[5
]}

Dou, Shi Xue ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, North Wollongong, NSW 2500, Australia

[2] Koc Univ, Dept Chem, TR-34450 Istanbul, Turkey

[3] Pavezyum Kimya San Dis Tic Ltd Sti, TR-34940 Istanbul, Turkey

[4] Polish Acad Sci, Inst High Pressure Phys, PL-01142 Warsaw, Poland

[5] Int Lab High Magnet Fields & Low Temp, PL-53421 Wroclaw, Poland

来源：

SCRIPTA MATERIALIA | 2015年 / 104卷

基金：

澳大利亚研究理事会;

关键词：

Carbon-encapsulated boron; Critical current density; MgB2; Impurity scattering; CRYSTAL;

D O I：

10.1016/j.scriptamat.2015.04.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The unavailability of high quality precursor is encouraging researchers to seek effective ways to fabricate magnesium diboride (MgB2) wire. Herein, cost-effective amorphous boron powder produced through a diborane (B2H6) gas process is investigated for the possibility of further industrial application. A thin carbon layer to encapsulate the boron particles is simultaneously deposited by pyrolysis of hydrocarbon. We found that the carbon-encapsulated amorphous boron has a high upper critical field due to impurity scattering, and thereby, enhanced high-field critical current density. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：37 / 40

页数：4

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