The varied kinetics mechanisms in the synthesis of MgB2 from elemental powders by low-temperature sintering

18Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.
Get full text

Abstract

The in situ X-ray diffraction technique is adopted to determine the degree of reaction between Mg and B at several isothermal temperatures below Mg melting. Based on these isothermal data, a kinetics analysis of MgB2 phase formation during the low-temperature sintering is carried out. It is found that the reaction between Mg and B is controlled by varied mechanisms. In the initial stage, the reaction rate is mainly controlled by a phase boundary reaction mechanism. As the reaction proceeds, the diffusion-limited mechanism gradually becomes dominant. The corresponding activation energy also firstly decreases, and then increases again during the whole reaction process. Combined with the classic solid-sintering theory, the determined kinetics model is valid and consistent with the actual sintering process. © 2010 Elsevier B.V. All rights reserved.

Cite

CITATION STYLE

APA

Ma, Z., & Liu, Y. (2011). The varied kinetics mechanisms in the synthesis of MgB2 from elemental powders by low-temperature sintering. Materials Chemistry and Physics, 126(1–2), 114–117. https://doi.org/10.1016/j.matchemphys.2010.11.057

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free