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Synthesis of MgB2 from Mgb4 through combinatorial solid state reaction routes.


Citation

Tan, K. L. and Tan, K. Y. and Lim, Kean Pah and Abdul Halim, Shaari and Chen, Soo Kien (2011) Synthesis of MgB2 from Mgb4 through combinatorial solid state reaction routes. Solid State Science and Technology, 19 (1). pp. 15-19. ISSN 0128-7389

Abstract

MgB4 was first prepared from the elemental magnesium and boron powders, followed by acid-washed in order to remove the primary impurity of MgO. In the second step, appropriate amount of Mg was added into the MgB4 powders and sintered in the temperature range of 650°C to 950°C for 8 hours. XRD spectra showed that MgB2 appeared as the main phase. The relative intensity fraction for MgB2 was found to decrease while this value was increased for MgB4 and MgO upon increasing the sintering temperature. Scanning electron microscopy showed a denser microstructure compared to samples prepared by direct in-situ reaction of (Mg + 2B). The density was found to decrease with increasing sintering temperature possibly due to the loss of Mg.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Malaysian Solid State Science and Technology Society (MASS)
Keywords: MgB2; Superconductor.
Depositing User: Nur Farahin Ramli
Date Deposited: 31 Jul 2013 06:34
Last Modified: 12 Jan 2016 05:06
URI: http://psasir.upm.edu.my/id/eprint/25041
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