Diffusion in Al-Ni and Al-NiCr Interfaces at Moderated Temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F09%3APU83552" target="_blank" >RIV/00216305:26210/09:PU83552 - 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

Diffusion in Al-Ni and Al-NiCr Interfaces at Moderated Temperatures

Popis výsledku v původním jazyce

The diffusion couples for experimental study were prepared by HVOF spraying of nickel and nickel with 20wt.% of chromium powders onto the aluminium steet s surface. The interfaces with sharp gradient of chemical concentration of these elements were prepared. Annealing at the temperatures 600oC and 630oC, close to the Al+Al3Ni eutectic melting point (639,9oC), with different dwell times were realized. The reactants during the annealing diffuse and create layers of Al3Ni2 and Al3Ni intermediate phase compositions. Moreover, nickel without assistance of chromium diffuses preferably by using grain boundaries into aluminium substrate and produces the strengthening of the substrate by stable Al3Ni and metastable Al9Ni2 particles. The microstructures were obtained by scanning electron microscope. Layer theckness measurements were realized by means of image analyses. Chemical composition was estimated by energy dispersive microanalysis measurements. According to the results of these analyses p

Název v anglickém jazyce

Diffusion in Al-Ni and Al-NiCr Interfaces at Moderated Temperatures

Popis výsledku anglicky

The diffusion couples for experimental study were prepared by HVOF spraying of nickel and nickel with 20wt.% of chromium powders onto the aluminium steet s surface. The interfaces with sharp gradient of chemical concentration of these elements were prepared. Annealing at the temperatures 600oC and 630oC, close to the Al+Al3Ni eutectic melting point (639,9oC), with different dwell times were realized. The reactants during the annealing diffuse and create layers of Al3Ni2 and Al3Ni intermediate phase compositions. Moreover, nickel without assistance of chromium diffuses preferably by using grain boundaries into aluminium substrate and produces the strengthening of the substrate by stable Al3Ni and metastable Al9Ni2 particles. The microstructures were obtained by scanning electron microscope. Layer theckness measurements were realized by means of image analyses. Chemical composition was estimated by energy dispersive microanalysis measurements. According to the results of these analyses p

Druh

O - Ostatní výsledky

CEP obor

JI - Kompositní materiály

OECD FORD obor

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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

2009

Kód důvěrnosti údajů

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