Preparation and properties of C-Fe nanocomposites

0178169 - UFM-A 20033192 RIV SIGLE SK eng C - Konferenční příspěvek (zahraniční konf.)
Schneeweiss, Oldřich - David, Bohumil - Pizúrová, Naděžda
Preparation and properties of C-Fe nanocomposites.
Proceedings of the International Conference Advanced Metallic Materials. Bratislava: Institute of Materials and Machine Mechanics, 2003 - (Jerz, J.; Šebo, P.; Zemánková, M.), s. 316. ISBN 80-969011-7-6.
[International Conference Advanced Metallic Materials 2003. Smolenice (SK), 05.11.2003-07.11.2003]
Grant CEP: GA ČR GA202/01/0668; GA MŠMT OC 523.20
Výzkumný záměr: CEZ:AV0Z2041904
Klíčová slova: carbon * iron * nanocomposite
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

The nanocomposites of iron nanoparticles in carbon phases prepared by spark synthesis, laser pyrolysis and mechanical milling were investigated. Structure and phase analysis were carried out by Mössbauer spectroscopy, X-ray diffraction, TEM, and magnetic measurement. In the as-prepared state a nanocrystalline iron, iron carbides, iron oxides and carbon phases were identified. Mean particle size were 10 - 30 nm. Using additional heat treatment higher amount (about 95%) of iron atoms in a-Fe particles were obtained. The particles had mean diameters about 30 - 50 nm and were closed in graphite shells.
Trvalý link: http://hdl.handle.net/11104/0075058