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Description
| - Laserová pyrolýza plynné směsi toluenu a pentakarbonylu železa za přítomnosti etylénu jakožto absorbéru CO2 laserového záření byla použita pro syntézu Fe-C nanostruktur obsahujících cementit Fe3C jakožto majoritní komponentu. Pasivované Fe-C nanokompozity byly charakterizovány pomocí několika doplňujících se analytických metod. Byla nalezena dobrá shoda mezi výsledky získanými technikami RTG difrakce, Mössbauerovy spektroskopie a vysokorozlišovací elektronové mikroskopie, které navíc prokázaly, že kromě cementitu, železa a oxidů železa jsou přítomny také další karbidy železa. Jsou studovány i zvláštní aspekty morfologie nanozrn v převážně neuspořádané a kvaziamorfní uhlíkové matrici. Je popsán is současný výskyt dosti malých krystalitů (střední rozměr 3-6 nm), identifikovyných jako Fe3C/α-Fe či oxidy železa (magnetit/maghemit), a jednofázových větších krystalitů (střední rozměr 10-13 nm), identifikovaných jako Fe3C. (cs)
- Abstract CO2 laser induced co-pyrolysis of toluene and iron pentacarbonyl in the presence of an ethylene sensitizer was used to produce iron-carbon nanostructures containing cementite Fe3C as the major component. The passivated Fe-C nanocomposites were characterized by several complementary analytical methods. Good agreement is found between the results of X-ray diffraction, Mössbauer spectroscopy and high-resolution transmission electron microscopy techniques which show that besides cementite, iron, and iron oxides, traces of other carbides are also present. Specific morphological aspects of the nanograins encased in a mostly disordered and quasi-amorphous carbon matrix are revealed. The simultaneous presence of rather small crystallites (mean diameter between 3–6 nm), identified as possible Fe3C/α-Fe and iron oxide (maghemite/magnetite) phases and of single-phase larger crystallites (10–13 nm mean diameter), identified as Fe3C is illustrated.
- Abstract CO2 laser induced co-pyrolysis of toluene and iron pentacarbonyl in the presence of an ethylene sensitizer was used to produce iron-carbon nanostructures containing cementite Fe3C as the major component. The passivated Fe-C nanocomposites were characterized by several complementary analytical methods. Good agreement is found between the results of X-ray diffraction, Mössbauer spectroscopy and high-resolution transmission electron microscopy techniques which show that besides cementite, iron, and iron oxides, traces of other carbides are also present. Specific morphological aspects of the nanograins encased in a mostly disordered and quasi-amorphous carbon matrix are revealed. The simultaneous presence of rather small crystallites (mean diameter between 3–6 nm), identified as possible Fe3C/α-Fe and iron oxide (maghemite/magnetite) phases and of single-phase larger crystallites (10–13 nm mean diameter), identified as Fe3C is illustrated. (en)
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Title
| - Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl
- Nanočástice železo-uhlík připravené pyrolýzou toluenu a pentakrobonylu železa vyvolanou zářením CO2 laseru (cs)
- Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl (en)
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skos:prefLabel
| - Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl
- Nanočástice železo-uhlík připravené pyrolýzou toluenu a pentakrobonylu železa vyvolanou zářením CO2 laseru (cs)
- Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl (en)
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skos:notation
| - RIV/68081723:_____/06:00045344!RIV07-AV0-68081723
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/68081723:_____/06:00045344
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - laser pyrolysis; Fe3C; alpha-Fe (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Applied Physics A - Materials Science & Processing
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - David, Bohumil
- Schneeweiss, Oldřich
- Morjan, I.
- Alexandrescu, R.
- Dumitrache, F.
- Huisken, F.
- Soare, I.
- Barjega, R.
- Jäger, C.
- Mutschke, H.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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is http://linked.open...avai/riv/vysledek
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