Charakterizace korových nanočástic pomocí rozptylu neutronů na malé úhly (SANS)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F07%3A%230000044" target="_blank" >RIV/26722445:_____/07:#0000044 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/07:00326089

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Core-Shell Nanoparticles by Small Angle Neutron Scattering

Popis výsledku v původním jazyce

The Ni3Si-type nanoparticles dispersed in a mixture of H2O/D2O were characterised by SANS using the contrast variation method. The existence of a core-shell structure in the nanoparticles with a Ni3Si(Al) core and amorphous SiOx shell is confirmed by theSANS measurements. The nanoparticles were produced by extracting precipitates from a bulk Ni-13.3Si-2Al ( at.?%) alloy using electrochemical phase separation technique and were pre-characterised by X-ray diffraction and transmission electron microscopy.By comparing the precipitate morphology in the Ni-Si-Al alloy with the extracted nanoparticles in the SANS measurements, it is clearly established that the precipitates shape and size are unaffected by the extraction process and that the amorphous shellforms on top of the particle core. However, the present measurement could not confirm or exclude the presence of H atoms in the shell structure.

Název v anglickém jazyce

Characterization of Core-Shell Nanoparticles by Small Angle Neutron Scattering

Popis výsledku anglicky

The Ni3Si-type nanoparticles dispersed in a mixture of H2O/D2O were characterised by SANS using the contrast variation method. The existence of a core-shell structure in the nanoparticles with a Ni3Si(Al) core and amorphous SiOx shell is confirmed by theSANS measurements. The nanoparticles were produced by extracting precipitates from a bulk Ni-13.3Si-2Al ( at.?%) alloy using electrochemical phase separation technique and were pre-characterised by X-ray diffraction and transmission electron microscopy.By comparing the precipitate morphology in the Ni-Si-Al alloy with the extracted nanoparticles in the SANS measurements, it is clearly established that the precipitates shape and size are unaffected by the extraction process and that the amorphous shellforms on top of the particle core. However, the present measurement could not confirm or exclude the presence of H atoms in the shell structure.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Physics A: Materials Science & Processing

ISSN

0947-8396

e-ISSN

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Svazek periodika

88

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

277-284

Kód UT WoS článku

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EID výsledku v databázi Scopus

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