Iron-Based Nanopowders Containing alfa-Fe, Fe3C, and gamma-Fe Particles Synthesised in Microwave Torch Plasma and Investigated with Mossbauer Spectroscopy
| Autoři | |
|---|---|
| Rok publikování | 2011 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Japanese Journal of Applied Physics |
| Fakulta / Pracoviště MU | |
| Citace | |
| Doi | http://dx.doi.org/10.1143/JJAP.50.08JF11 |
| Obor | Fyzika plazmatu a výboje v plynech |
| Klíčová slova | CARBON NANOTUBES; ATMOSPHERIC-PRESSURE; PHASE SYNTHESIS; GAS-PHASE; NANOPARTICLES; GAMMA-Fe; iron pentacarbonyle |
| Přiložené soubory | |
| Popis | Two Fe-based nanopowders were synthesised using microwave torch discharge at 1 bar. The main channel of the discharge was operating in Ar, which flowed through the central nozzle of an electrode, whereas the reactive mixture H(2)/Fe(CO)(5) was added through a concentric outer nozzle. Besides rarely observed gamma-Fe particles (for the first sample: d(XRD) = 30 nm, 35 wt %; for the second sample: d(XRD) = 9 nm, 33wt %) samples also included alpha-Fe, Fe(3)C, and Fe(3)O(4)/gamma-Fe(2)O(3) particles. The presence of gamma-Fe phase was proved by the interpretation of the XRD patterns and the Mossbauer spectra taken at 293 and 5 K. |
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