Use of Solid Insertion Probe Mass Spectrometry and Constant Rate Thermal Analysis in the Study of Materials:  Determination of Apparent Activation Energies and Mechanisms of Solid-State Decomposition Reactions

1999 ◽  
Vol 103 (33) ◽  
pp. 6944-6949 ◽  
Author(s):  
M. J. Tiernan ◽  
P. A. Barnes ◽  
G. M. B. Parkes
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Solid State ◽  
Activation Energies ◽  
Decomposition Reactions ◽  
Solid State Decomposition ◽  
Constant Rate ◽  
Apparent Activation Energies

Novel Mg Sensors for Application in Molten Al

2008 ◽  
Vol 368-372 ◽  
pp. 265-267 ◽  
Author(s):  
Hui Zhu Zhou ◽  
Lei Dai ◽  
Yue Hua Li ◽  
Yin Lin Wu ◽  
Ling Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Electrochemical Sensors ◽  
Activation Energies ◽  
Refining Process ◽  
Molten Aluminium ◽  
On Line ◽  
Mg Content

Mg ion conductors, MgAl2O4 and MgZr4(PO4)6, were prepared by solid state reaction. Their electrical properties were measured and their application in electrochemical sensors for on-line determination of Mg in molten Al in the refining process and alloying process was examined. The activation energies for Mg ion conduction in MgAl2O4 and MgZr4(PO4)6 are 2.08 eV and 1.7 eV, respectively. The sensors have been found to respond rapidly to the change of Mg content in molten aluminium around 1000 K.

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