Structure, phase composition and magnetic properties of Fe–Si–C system due to mechanical activation of Fe–Si alloy in organic liquids

Lomayeva, S.F.; Maratkanova, A. N.

doi:10.1016/j.intermet.2009.02.010

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…4(b) adjacent to the (Fe,Mn) 23 C 6 carbide. In a FeeSieC system, metastable silicon carbides with variable formulas such as Fe 3 SiC, Fe 4 SiC, Fe 10 Si 2 C 2 , Fe 10 Si 2 C 3 , Fe 8 Si 2 C, and Fe 9 SiC 2 can be obtained during fast quenching or certain heat treatments [19]. The (Fe,Mn) 5 SiC carbide was found in a Fe(70) Si(x)C(30Àx) system with x in the range of 5e30 at.% [20].…”

Section: Resultsmentioning

confidence: 99%

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

Yoo

Han

Park

et al. 2014

Materials Chemistry and Physics

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Section: Resultsmentioning

confidence: 99%

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

Yoo

Han

Park

et al. 2014

Materials Chemistry and Physics

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“…The SiCN/Fe ceramic material was investigated intensively [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ] and it was found that the magnetism of this material is a sum of different sources of magnetism: ferromagnetic nanoparticles with different compositions, superparamagnetic Fe 3+ ion clusters and paramagnetic Fe 3+ ions. Hence, one of very important aim to carefully control the chemical composition of SiCNFe ceramics with predictable magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

“…Several investigations of SiCN doped with Fe ions were conducted recently [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. These studies revealed that magnetic properties of SiCNFe composite are determined by the formation of magnetic nanoparticles, dispersed in diamagnetic SiCN nanoceramics.…”

Section: Introductionmentioning

confidence: 99%

SiCNFe Ceramics as Soft Magnetic Material for MEMS Magnetic Devices: A Mössbauer Study

et al. 2023

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Polymer-derived SiCNFe ceramics is a prospective material that can be used as soft magnets in MEMS magnetic applications. The optimal synthesis process and low-cost appropriate microfabrication should be developed for best result. Homogeneous and uniform magnetic material is required for developing such MEMS devices. Therefore, the knowledge of exact composition of SiCNFe ceramics is very important for the microfabrication of magnetic MEMS devices. The Mössbauer spectrum of SiCN ceramics, doped with Fe (III) ions, and annealed at 1100 °C, was investigated at room temperature to accurately establish the phase composition of Fe-containing magnetic nanoparticles, which were formed in this material at pyrolysis and which determine their magnetic properties. The analysis of Mössbauer data shows the formation of several Fe-containing magnetic nanoparticles in SiCN/Fe ceramics, such as α-Fe, FexSiyCz, traces of Fe-N and paramagnetic Fe3+ with octahedral oxygen environment. The presence of iron nitride and paramagnetic Fe3+ ions shows that the pyrolysis process was not completed in SiCNFe ceramics annealed at 1100 °C. These new observations confirm the formation of different Fe-containing nanoparticles with complex composition in SiCNFe ceramic composite.

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“…ref. [15,16,17] XRD experiments were performed in a Bruker D8 I diffractometer using Cu-K radiation. The acquired patterns were fitted using TOPAS software and Pawley method [23] (full pattern fitting) in order to obtain the crystal size and microstrains of the phases.…”

mentioning

confidence: 99%

“…ref. [15,16,17]). Pandey et al [18] performed a quantitative analysis using a binomial distribution considering the two first shells of Fe to describe the mechanical alloying of Fe-Cr binary alloys.…”

mentioning

confidence: 99%

Extracting the composition of nanocrystals of mechanically alloyed systems using Mössbauer spectroscopy

Blázquez

Ipus

Franco

et al. 2014

Journal of Alloys and Compounds

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Determining the composition at the nanoscale generally requires the use of experimental techniques such as 3D atom probe or nanoanalysis, which have limited availability, involve high economic cost and, moreover, imply aggressive sample preparations. However, the combination of Mössbauer spectrometry (MS), X-ray diffraction (XRD) and magnetization measurements can supply very detailed information on the average values of composition of tiny elements of the microstructure such as nanocrystals and boundary regions. Unlike nanoscale techniques, those techniques are widely accessible to most of the scientific community and do not require any special sample preparation, especially for powder samples. Two methods are proposed: the first method uses the ratio between the high field contributions to the MS spectra to extract the composition of the nanocrystals and allows us to follow its evolution; the second method uses average values of the hyperfine field and XRD data to study nanocrystalline samples. These procedures have been applied to two FeNb(B) powder samples obtained by mechanical alloying. The proposed procedures can be easily extended to systems containing other isotopes suitable for Mössbauer spectroscopy or to data from nuclear magnetic resonance experiments.Journal of Alloys and Compounds, 610 (2014) 92-99 http://dx.doi.org/10.1016/j.jallcom.2014.04.195 2 IntroductionCompositional and microstructural characterization of materials is a key point to optimize technological properties, to understand the underlying physics and to develop theories and models to go further in Materials Science. This characterization is especially tricky for nanoscale systems, for which the characteristic size to be analyzed can be so small that could apparently be only accessible to nanoprobe techniques (such as high resolution transmission electron microscopy, 3D atom probe, atomic force microscopy, etc.). The presence of irregularities even at such scales implies non simple interpretation of the results. In addition, nanoscale techniques, in general, require costly (economically and in time) sample preparation procedures and limit the explored region to a very small part of the sample (where, artifacts due to the effects of sample preparation might also play a role). Therefore, a very detailed but local information is obtained and it must be extrapolated to the overall system. Unlike these techniques, conventional ones such as X-ray diffraction or Mössbauer spectroscopy can supply average information of a sample with a macroscopic size. These techniques are widely used to identify the phases present in the material and some other structural characteristics such as crystal size, microstrains, lattice parameter, etc. In fact, compositional information can be derived from Mössbauer data but requires further analysis in combination with other experimental techniques. In fact, the capabilities of Mössbauer spectroscopy to analyze nanoscale systems have been pointed out by different authors [1,2,3,4].For magnetic appli...

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Structure, phase composition and magnetic properties of Fe–Si–C system due to mechanical activation of Fe–Si alloy in organic liquids

Cited by 8 publications

References 19 publications

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

SiCNFe Ceramics as Soft Magnetic Material for MEMS Magnetic Devices: A Mössbauer Study

Extracting the composition of nanocrystals of mechanically alloyed systems using Mössbauer spectroscopy

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