ISSN:
1432-1130
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The mechanism of nitrogenation of Sm2Fe17 was investigated with in-situ high temperature x-ray diffraction with Debye-Scherrer optic using a quartz capillary equipped with an additional buffer volume to supply sufficient nitrogen for the expected phase reaction. The formation of Sm2Fe17Nx with x ≈ 3 was observed at temperatures between 325 °C and 450 °C. During the phase transition period, taking 30–90 min at 450 °C and up to 300 min at 350 °C, two phases were observed simultaneously, a non-nitrided Sm2Fe17 phase and the already fully nitrided Sm2Fe17N3 phase. At 325 °C no single-phase material could be obtained during 300 min. The resulting lattice parameters measured after the complete nitrogenation are the same as those, obtained from the externally nitrogenized samples.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002160050988
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