Diffusion of nitrogen in R2Fe17 (R =rare earth) compounds determined by the Kissinger method
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چکیده
The activation energy of nitrogen diffusion in R2Fe,, (R=rare earth) compounds has been determined by applying the Kissinger method to analyse the differential scanning calorimetry (DSC) traces of nitrogenated R2Fe1, compounds. The nitrogen outgas that starts when the nitrides are heated above about 300 “C is a typical decomposition reaction of the type solid + solid + gas to which the Kissinger method can be applied. From the heating-rate dependence of the endothermic peaks in the DSC curves, values for the activation energy of nitrogen diffusion are derived. There is good agreement between the results for SmzFe,, and NdZFe,, obtained in the present investigation and the results reported in the literature which were obtained by means of other methods.
منابع مشابه
Nitrogen diffusion mechanism in the R2Fe17 lattice
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