Phase transformations of the Ag-Cu nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00073855" target="_blank" >RIV/00216224:14310/14:00073855 - 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

Phase transformations of the Ag-Cu nanoparticles

Popis výsledku v původním jazyce

The near-eutectic composition Ag-Cu nanoparticles (NPs) were prepared by solvothermal synthesis from metallo-organic precursors. The nanoparticle size was measured by dynamic light scattering (DLS). The size and shape were evaluated by electron microscopy (TEM and HRTEM). The phase diagrams of the AgCu system of both bulk alloy and nanoparticles were calculated [1] by the CALPHAD method [2] and then compared with experimental findings. Thermal behaviour was investigated by differential scanning calorimetry (DSC) and temperature controlled X-ray diffraction method (t-XRD). The observed phase transformations were AgCu bulk alloy melting (BM), nanoparticle melting point depression (MPD) and spinodal decomposition (SD). Moreover NPs aggregation and low temperature sintering (LTS) phenomena were observed experimentally too. The electron microscopy (TEM, SEM) observation was used for bulk alloy, microparticles (MP), and nanoparticles.

Název v anglickém jazyce

Phase transformations of the Ag-Cu nanoparticles

Popis výsledku anglicky

The near-eutectic composition Ag-Cu nanoparticles (NPs) were prepared by solvothermal synthesis from metallo-organic precursors. The nanoparticle size was measured by dynamic light scattering (DLS). The size and shape were evaluated by electron microscopy (TEM and HRTEM). The phase diagrams of the AgCu system of both bulk alloy and nanoparticles were calculated [1] by the CALPHAD method [2] and then compared with experimental findings. Thermal behaviour was investigated by differential scanning calorimetry (DSC) and temperature controlled X-ray diffraction method (t-XRD). The observed phase transformations were AgCu bulk alloy melting (BM), nanoparticle melting point depression (MPD) and spinodal decomposition (SD). Moreover NPs aggregation and low temperature sintering (LTS) phenomena were observed experimentally too. The electron microscopy (TEM, SEM) observation was used for bulk alloy, microparticles (MP), and nanoparticles.

Druh

O - Ostatní výsledky

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-12653S" target="_blank" >GA14-12653S: Stabilita a fázové rovnováhy binárních nanočástic kovů</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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