Nanoscale phases on surface Fe-6Si magnetic sheets

0473874 - ÚFM 2018 RIV CZ eng C - Conference Paper (international conference)
Švábenská, Eva - Roupcová, Pavla - Král, Lubomír - Bulín, Tomáš - Vondráček, Martin - Foldyna, Josef - Čechal, J. - Schneeweiss, Oldřich
Nanoscale phases on surface Fe-6Si magnetic sheets.
NANOCON 2016. 8th International Conference on Nanomaterials - Research and Application. Conference Proceedings. Ostrava: Tanger, 2017, s. 172-177. ISBN 978-80-87294-71-0.
[Nanocon 2016. 8. ročník mezinárodní konference nanomateriálů - výzkum & aplikace. Brno (CZ), 19.10.2016-21.10.2016]
R&D Projects: GA MŠMT(CZ) LQ1601
Institutional support: RVO:68081723 ; RVO:68378271 ; RVO:68145535
Keywords : Fe-Si alloy * surface modification * nanostructure
OECD category: Materials engineering; Materials engineering (UFM-A); Mechanical engineering (UGN-S); Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) (FZU-D)

Analysis of the nanoscale phases which appear on the surface Fe-6Si samples were carried out after the various treatments – grinding and etching, annealing, and water jet abrasion. The basic information on structure, chemical and phase composition was obtained by X-Ray Powder Diffraction (XRD), Scanning Electron Microscopy with EDX, Glow Discharge Optical Emission Spectrometry (GDOES), Mössbauer Spectroscopy and X-ray Photoelectron Spectrometry (XPS). The results show high stability of the surface phase composition after the mechanical and heat treatments. Results obtained from the surface analysis in micrometer depth (XRD, EDX, GDOES) do not show any changes after the different treatments. Iron oxides were detected in XPS and conversion electron Mössbauer spectra (CEMS) which analyze the surface composition in a nanometer scale. In addition to, fine changes in atomic ordering on the surface can be observed after mechanical and heat treatments in the CEMS spectra.
Permanent Link: http://hdl.handle.net/11104/0275062