Kinetically facilitated liquid-liquid transition in a metallic liquid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F22%3A43896896" target="_blank" >RIV/44555601:13520/22:43896896 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S135964542200221X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S135964542200221X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2022.117834" target="_blank" >10.1016/j.actamat.2022.117834</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Kinetically facilitated liquid-liquid transition in a metallic liquid

Popis výsledku v původním jazyce

The subtle existence of a liquid-liquid transition in ?homogeneous? equilibrium metallic liquids is difficult to detect. An exothermic peak with the onset temperature above the equilibrium liquidus temperature is detected by in-situ ultrafast calorimetry in Yb-Zn liquid. The thermal event emerges on cooling, only. The exothermic event maintains a constant reversible part of the specific heat during modulated cooling, and it does not appear to be reversed on heating as no corresponding endothermic event is detected. The transition temperature lies about 6% above the equilibrium liquidus temperature and the detected enthalpy change of the transition is about 10?12% of the enthalpy of fusion for the highest cooling rates ?104 K s?1 applied. The critical quenching temperature, below which the exotherm disappears on cooling, coincides with a liquid-liquid transition studied in the literature by other techniques. A phase diagram inclusive of the transition in the liquid is constructed by using calorimetry signals.

Název v anglickém jazyce

Kinetically facilitated liquid-liquid transition in a metallic liquid

Popis výsledku anglicky

The subtle existence of a liquid-liquid transition in ?homogeneous? equilibrium metallic liquids is difficult to detect. An exothermic peak with the onset temperature above the equilibrium liquidus temperature is detected by in-situ ultrafast calorimetry in Yb-Zn liquid. The thermal event emerges on cooling, only. The exothermic event maintains a constant reversible part of the specific heat during modulated cooling, and it does not appear to be reversed on heating as no corresponding endothermic event is detected. The transition temperature lies about 6% above the equilibrium liquidus temperature and the detected enthalpy change of the transition is about 10?12% of the enthalpy of fusion for the highest cooling rates ?104 K s?1 applied. The critical quenching temperature, below which the exotherm disappears on cooling, coincides with a liquid-liquid transition studied in the literature by other techniques. A phase diagram inclusive of the transition in the liquid is constructed by using calorimetry signals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LM2018124" target="_blank" >LM2018124: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

1873-2453

Svazek periodika

230

Číslo periodika v rámci svazku

117834

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

000791271900001

EID výsledku v databázi Scopus

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