Ab initio surface energy calculations and their application for the prediction of phase diagrams of silver, gold and nickel nanoalloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F18%3A00101530" target="_blank" >RIV/00216224:14740/18:00101530 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.nanocon.eu/cz/" target="_blank" >https://www.nanocon.eu/cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Ab initio surface energy calculations and their application for the prediction of phase diagrams of silver, gold and nickel nanoalloys

Popis výsledku v původním jazyce

The ternary Ag-Au-Ni bulk alloy represents combination of fully miscible Au-Ni system at middle temperature range and two fully immiscible systems Ag-Ni and Au-Ni in solid state. The bulk phase diagrams of the ordinary alloys can be calculated by standard use of the CALPHAD (CALculation of PHAse Diagram) method. The phase diagrams of the alloy nanoparticles (nanoalloys) can be calculated in this way as well. The Ag-Au, Ag-Ni and Au-Ni binary nanoalloys were investigated with respect to nanoparticle size as independent variable. The phase diagram of the ternary Ag-Au-Ni nanoalloy was predicted by CALPHAD method also. The general thermodynamic description of the phases was extended with respect to unneglectable surface energy contribution and variable shapes of nanoparticles. The CALPHAD calculation was completed by theoretical values of surfaces energy obtained by density functional theory (DFT) approach for metallic systems.

Název v anglickém jazyce

Ab initio surface energy calculations and their application for the prediction of phase diagrams of silver, gold and nickel nanoalloys

Popis výsledku anglicky

The ternary Ag-Au-Ni bulk alloy represents combination of fully miscible Au-Ni system at middle temperature range and two fully immiscible systems Ag-Ni and Au-Ni in solid state. The bulk phase diagrams of the ordinary alloys can be calculated by standard use of the CALPHAD (CALculation of PHAse Diagram) method. The phase diagrams of the alloy nanoparticles (nanoalloys) can be calculated in this way as well. The Ag-Au, Ag-Ni and Au-Ni binary nanoalloys were investigated with respect to nanoparticle size as independent variable. The phase diagram of the ternary Ag-Au-Ni nanoalloy was predicted by CALPHAD method also. The general thermodynamic description of the phases was extended with respect to unneglectable surface energy contribution and variable shapes of nanoparticles. The CALPHAD calculation was completed by theoretical values of surfaces energy obtained by density functional theory (DFT) approach for metallic systems.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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