Mechanical properties of Fe-Si and Ni-Fe core-shell particles coated by NiFe2O4 ferrite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00450433" target="_blank" >RIV/68081723:_____/15:00450433 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Mechanical properties of Fe-Si and Ni-Fe core-shell particles coated by NiFe2O4 ferrite

Popis výsledku v původním jazyce

The core-shell particles were prepared by coating Fe-Si and Ni-Fe particles with NiFe2O4 ferrite. NiFe2O4 cuboidal nanoparticles were directly deposited onto particle´s surface by the chemical precipitation of hydroxides by alkaline treatment of the dissolved metal in aqueous chloride solution. The deposited coating consisted of two concentric layers: dense one adherent to the particle´s surface and particulate one forming outer shell of the particle. The mechanical properties of coated particles were studied by means of instrumented indentation. The indentation hardness of Fe-Si and Ni-Fe particles was about 6GPa and 10GPa, respectively. The hardness of dense ferrite layer was about 9GPa while hardness of particulate outer shelf was about 2GPa. Due tosilica/silicides interlayer developed onto surface the nature of Fe-Si core-shell particle response to mechanical loading was brittle. Even under low loading up-to 1mN by Berkovich indentor, the cracks induced from corners of indentor im

Název v anglickém jazyce

Mechanical properties of Fe-Si and Ni-Fe core-shell particles coated by NiFe2O4 ferrite

Popis výsledku anglicky

The core-shell particles were prepared by coating Fe-Si and Ni-Fe particles with NiFe2O4 ferrite. NiFe2O4 cuboidal nanoparticles were directly deposited onto particle´s surface by the chemical precipitation of hydroxides by alkaline treatment of the dissolved metal in aqueous chloride solution. The deposited coating consisted of two concentric layers: dense one adherent to the particle´s surface and particulate one forming outer shell of the particle. The mechanical properties of coated particles were studied by means of instrumented indentation. The indentation hardness of Fe-Si and Ni-Fe particles was about 6GPa and 10GPa, respectively. The hardness of dense ferrite layer was about 9GPa while hardness of particulate outer shelf was about 2GPa. Due tosilica/silicides interlayer developed onto surface the nature of Fe-Si core-shell particle response to mechanical loading was brittle. Even under low loading up-to 1mN by Berkovich indentor, the cracks induced from corners of indentor im

Druh

O - Ostatní výsledky

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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