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A study on the formation of MgAl2O4 and MgO crystals in Al-Mg/quartz composite by differential thermal analysis

Sreekumar, V. M., Pillai, R.M., Pai, B.C. and Chakraborty, M. 2008, A study on the formation of MgAl2O4 and MgO crystals in Al-Mg/quartz composite by differential thermal analysis, Journal of alloys and compounds, vol. 461, no. 1-2, pp. 501-508, doi: 10.1016/j.jallcom.2007.07.032.

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Title A study on the formation of MgAl2O4 and MgO crystals in Al-Mg/quartz composite by differential thermal analysis
Author(s) Sreekumar, V. M.
Pillai, R.M.
Pai, B.C.
Chakraborty, M.
Journal name Journal of alloys and compounds
Volume number 461
Issue number 1-2
Start page 501
End page 508
Publisher Elsevier
Place of publication Amsterdam, Netherlands
Publication date 2008-08
ISSN 0925-8388
1873-4669
Keyword(s) MgAl2O4
surface energy
oxidation
MgO
Summary The present study has examined the thermodynamics of MgAl2O4 and MgO formations in Al–Mg alloy/quartz (>99% crystalline silica) through differential thermal analysis (DTA). The formation of MgAl2O4 and MgO is detected as exothermic peaks in the heat flow curve and the reaction is confirmed by the Si dissolution peaks observed during the reheating of samples and SEM analysis of the reacted sample. The presence of MgAl2O4 and MgO is confirmed in the XRD analysis of the reacted sample. The study has enabled the production of nano sized MgAl2O4 and MgO crystals at the interface of Al–Mg alloy and quartz. The reaction between them is found to be influenced by the oxidation of Mg, which is reduced by increasing heating rates.
Language eng
DOI 10.1016/j.jallcom.2007.07.032
Field of Research 091207 Metals and Alloy Materials
091201 Ceramics
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2007, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30028218

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