NDLI: Calorimetric study of the oxidation of Al–Mg alloys for the prediction of healing of the double oxide film defect

Content Provider	Springer Nature Link
Author	Amirinejhad, Sajad Raiszadeh, Ramin Doostmohammadi, Hamid
Copyright Year	2012
Abstract	The oxidation of Al alloys containing 0.3–4.5 wt% Mg in an atmosphere with a very low oxygen partial pressure (<0.5 ppm, to depict the atmosphere within a double oxide film defect) was studied using differential scanning calorimetry and scanning electron microscopy. The results showed that a newly formed Al$_{2}$O$_{3}$ layer held in an Al–Mg melt first transformed to MgAl$_{2}$O$_{4}$ spinel and then to MgO. This mechanism was the same for all the Al alloys containing 0.3–4.5 wt% Mg, but the kinetics of the transformations were different and depended on the Mg content of the melt. The results also suggest that the two layers of a double oxide film defect that is held in an Al melt containing 0.3–4.5 wt% Mg can heal (i.e. bond to each other) if held in the liquid metal for a long enough period of time.
Starting Page	769
Ending Page	777
Page Count	9
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	113
Issue Number	2
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-11-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Differential scanning calorimetry Double oxide film defect Bifilm Al–Mg alloys Healing MgAl$_{2}$O$_{4}$ MgO Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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