FMR study of nanocarbon materials obtained by carburisation of nanocrystalline iron

• Autorzy: Narkiewicz U. , Arabczyk W. , Pełech I. , Guskos N. , Typek J. , Maryniak M. , Woźniak M. J. , Matysiak H. , Kurzydłowski K. J.
• Konferencja: 8th International Conference on Intermolecular and Magnetic Interaction in Matter, Nałeczów 8-10 September 2005
• Języki publikacji: EN

Abstrakty

EN

Samples of nanocrystalline iron were carburised with ethylene and next reduced with hydrogen. Both carburisation and reduction were monitored by the thermogravimetry. The obtained samples were characterised using X-ray diffraction, high-resolution transmission electron microscopy and ferromagnetic resonance. The samples after carburisation contained cementite (Fe3C) and carbon deposit (nanofibres and nanotubes). As the result of reduction with hydrogen at 450 or 500 °C cementite was reduced to iron. A major part of carbon was also hydrogenated, only thin carbon nanotubes remained. The FMR spectra of the prepared samples were recorded at room temperature. The sample after carburisation has shown a wide FMR line with weak intensity while the resonance field has been shifted to lower magnetic field. This spectrum has been attributed to the presence of cementite. The FMR lines corresponding to samples after reduction are more intense and are connected with the presence of alfa-Fe nanoparticle conglomerates.

Słowa kluczowe

EN

carburisation; reduction; iron carbide; FMR; HRTEM; ferromagnetic resonace

PL

nawęglanie; redukcja; węglik żelaza; rezonans ferromagnetyczny; transmisyjna mikroskopia elektronowa

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2006
• Tom: Vol. 24, No. 4
• Strony: 1067--1075
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Narkiewicz U.

autor

Arabczyk W.

autor

Pełech I.

autor

Guskos N.

autor

Typek J.

autor

Maryniak M.

autor

Woźniak M. J.

autor

Matysiak H.

autor

Kurzydłowski K. J.

• Institute of Chemical and Environment Engineering, Szczecin University of Technology, Pułaskiego 10, 70-322 Szczecin,

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