Crystallization kinetics in Se-Te glassy system-Effect of long-term material degradation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39902165" target="_blank" >RIV/00216275:25310/16:39902165 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tca.2016.07.014" target="_blank" >http://dx.doi.org/10.1016/j.tca.2016.07.014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tca.2016.07.014" target="_blank" >10.1016/j.tca.2016.07.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crystallization kinetics in Se-Te glassy system-Effect of long-term material degradation

Popis výsledku v původním jazyce

The influence of long-term laboratory-temperature degradation on the crystallization kinetics of the Se90Te10, Se80Te20 and Se70Te30 chalcogenide glasses was studied by differential scanning calorimetry. Periodical measurements during the 6 months aging period have shown that the fine Se-Te powders degraded largely, large degree of crystallinity occurred even though the materials were stored well below their glass transition temperature. The degradation increased with Te content. The defects-based residual crystallization kinetics exhibited by the fine Se-Te powders was not influenced significantly by the continuous degradation. Coarse Se-Te powders, on the other hand, exhibited only weak degradation with low amount of crystallinity occurring during the 6 months period but the crystallization kinetics of the degraded glasses changed markedly. The degraded coarse Se-Te powders have shown increased nuclei based volume-located growth of crystallites, which indicates that nucleation proceeded significantly below the glass transition; the effect increased largely with Te content.

Název v anglickém jazyce

Crystallization kinetics in Se-Te glassy system-Effect of long-term material degradation

Popis výsledku anglicky

The influence of long-term laboratory-temperature degradation on the crystallization kinetics of the Se90Te10, Se80Te20 and Se70Te30 chalcogenide glasses was studied by differential scanning calorimetry. Periodical measurements during the 6 months aging period have shown that the fine Se-Te powders degraded largely, large degree of crystallinity occurred even though the materials were stored well below their glass transition temperature. The degradation increased with Te content. The defects-based residual crystallization kinetics exhibited by the fine Se-Te powders was not influenced significantly by the continuous degradation. Coarse Se-Te powders, on the other hand, exhibited only weak degradation with low amount of crystallinity occurring during the 6 months period but the crystallization kinetics of the degraded glasses changed markedly. The degraded coarse Se-Te powders have shown increased nuclei based volume-located growth of crystallites, which indicates that nucleation proceeded significantly below the glass transition; the effect increased largely with Te content.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Thermochimica Acta

ISSN

0040-6031

e-ISSN

—

Svazek periodika

639

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

108-119

Kód UT WoS článku

000383006200013

EID výsledku v databázi Scopus

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