Rheological behaviour of CaO-MgO-SiO2-Al2O3-B2O3 system with varying B2O3 content up to 30 wt% at basicity of 0.4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10253971" target="_blank" >RIV/61989100:27360/24:10253971 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/24:10253971

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884223032856?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884223032856?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2023.10.228" target="_blank" >10.1016/j.ceramint.2023.10.228</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rheological behaviour of CaO-MgO-SiO2-Al2O3-B2O3 system with varying B2O3 content up to 30 wt% at basicity of 0.4

Popis výsledku v původním jazyce

A comprehensive theoretical and experimental study describing the effect of B2O3 (0-30 wt%) on softening, liquidus, and crystallization temperatures, flow behaviour, and dynamic viscosity of the glass-based oxide system SiO2(64.64-43.21 wt%)-MgO(10 wt%)-CaO(15.86-7.29 wt%)-Al2O3(9.50 wt%)-B2O3 with a constant basicity of 0.4 was carried out. The experimental data was obtained up to 1550 degrees C using a high-temperature rheometer and were supported by the study of the internal structure by means of scanning electron microscopy with energy -dispersive X-ray spectroscopy, X-ray powder diffraction analysis, and Fourier transform infrared spectroscopy. The increasing addition of boron oxide caused a decrease in the start and end softening and liquidus tempera-tures. At 1550 degrees C, the systems exhibited Newtonian behaviour, with a dynamic viscosity increasing exponentially with a decreasing temperature and decreasing with increasing B2O3 content. The amorphous character of the samples and the formation of structural units [BO2O-] and [BO3] and [BO4], confirmed by complementary analyses, led to a decrease in the degree of polymerization of the silicate structure. The theoretical insight into the dependence of dynamic viscosity on the temperature and composition was realized based on molecular dynamics. Furthermore, the prediction of viscosity as a function of temperature (1230-1550 degrees C) and the change in chemical composition (0-30 wt% B2O3) was performed using artificial neural networks.

Název v anglickém jazyce

Rheological behaviour of CaO-MgO-SiO2-Al2O3-B2O3 system with varying B2O3 content up to 30 wt% at basicity of 0.4

Popis výsledku anglicky

A comprehensive theoretical and experimental study describing the effect of B2O3 (0-30 wt%) on softening, liquidus, and crystallization temperatures, flow behaviour, and dynamic viscosity of the glass-based oxide system SiO2(64.64-43.21 wt%)-MgO(10 wt%)-CaO(15.86-7.29 wt%)-Al2O3(9.50 wt%)-B2O3 with a constant basicity of 0.4 was carried out. The experimental data was obtained up to 1550 degrees C using a high-temperature rheometer and were supported by the study of the internal structure by means of scanning electron microscopy with energy -dispersive X-ray spectroscopy, X-ray powder diffraction analysis, and Fourier transform infrared spectroscopy. The increasing addition of boron oxide caused a decrease in the start and end softening and liquidus tempera-tures. At 1550 degrees C, the systems exhibited Newtonian behaviour, with a dynamic viscosity increasing exponentially with a decreasing temperature and decreasing with increasing B2O3 content. The amorphous character of the samples and the formation of structural units [BO2O-] and [BO3] and [BO4], confirmed by complementary analyses, led to a decrease in the degree of polymerization of the silicate structure. The theoretical insight into the dependence of dynamic viscosity on the temperature and composition was realized based on molecular dynamics. Furthermore, the prediction of viscosity as a function of temperature (1230-1550 degrees C) and the change in chemical composition (0-30 wt% B2O3) was performed using artificial neural networks.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/EF17_049%2F0008399" target="_blank" >EF17_049/0008399: Rozvoj mezisektorové spolupráce RMTVC s aplikační sférou v oblasti výzkumu progresivních a inovací klasických kovových materiálů a technologií s využitím metod modelování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

50

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1389-1397

Kód UT WoS článku

001130368600001

EID výsledku v databázi Scopus

2-s2.0-85174697265