As2Se3 melt crystallization studied by quadratic approximation of nucleation and growth rate temperature dependence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F13%3A39896528" target="_blank" >RIV/00216275:25310/13:39896528 - isvavai.cz</a>

Výsledek na webu

<a href="http://link.springer.com/article/10.1007%2Fs10973-013-3085-4" target="_blank" >http://link.springer.com/article/10.1007%2Fs10973-013-3085-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-013-3085-4" target="_blank" >10.1007/s10973-013-3085-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

As2Se3 melt crystallization studied by quadratic approximation of nucleation and growth rate temperature dependence

Popis výsledku v původním jazyce

The constant heating rate crystallization of As2Se3 undercooled melt was measured by the differential scanning calorimetry. The nonlinear regression analysis of conversion temperature dependence was performed in frame of the classical nucleation theory supposing the normal 3D growth. The parameters of temperature dependence of nucleation rate and growth rate were determined by three step process. First the simple parabolic model was used to estimate the maximum and width of nucleation/growth rate temperature dependence. Then the obtained parabolic curves were fitted by the theoretical ones. In the third step, the obtained parameters were used as zero estimates for nonlinear regression analysis of experimental data. The results obtained by using conversion degree alpha were compared with the results obtained by using the -ln(1 - alpha) transformed function. Although both treatments give comparable results the use of -ln(1 - alpha) input data is preferred due to better numerical stabilit

Název v anglickém jazyce

As2Se3 melt crystallization studied by quadratic approximation of nucleation and growth rate temperature dependence

Popis výsledku anglicky

The constant heating rate crystallization of As2Se3 undercooled melt was measured by the differential scanning calorimetry. The nonlinear regression analysis of conversion temperature dependence was performed in frame of the classical nucleation theory supposing the normal 3D growth. The parameters of temperature dependence of nucleation rate and growth rate were determined by three step process. First the simple parabolic model was used to estimate the maximum and width of nucleation/growth rate temperature dependence. Then the obtained parabolic curves were fitted by the theoretical ones. In the third step, the obtained parameters were used as zero estimates for nonlinear regression analysis of experimental data. The results obtained by using conversion degree alpha were compared with the results obtained by using the -ln(1 - alpha) transformed function. Although both treatments give comparable results the use of -ln(1 - alpha) input data is preferred due to better numerical stabilit

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0021" target="_blank" >EE2.3.30.0021: Posílení excelentních týmů výzkumu a vývoje na Univerzitě Pardubice</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Svazek periodika

114

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

971-977

Kód UT WoS článku

000327460300005

EID výsledku v databázi Scopus

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