Key melt properties for controlled synthesis of glass beads by aerodynamic levitation coupled to laser heating

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928782" target="_blank" >RIV/60461373:22310/23:43928782 - isvavai.cz</a>

Výsledek na webu

<a href="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijag.16627" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijag.16627</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ijag.16627" target="_blank" >10.1111/ijag.16627</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Key melt properties for controlled synthesis of glass beads by aerodynamic levitation coupled to laser heating

Popis výsledku v původním jazyce

Binary alkali silicate glasses were synthesized as beads by aerodynamic levitation coupled to laser heating to test the applicability of the method to this compositional range. While bubble-free lithium disilicate beads could be easily obtained, sodium and potassium silicates proved more challenging to melt without significant alkali evaporation: the final samples contained bubbles and exhibited compositional drifts compared to the starting stoichiometry, especially at high SiO2 content. The risk of volatilization from the melts was evaluated empirically: the volatility of each oxide component scaled to the ratio between its melting temperature Tm and the Tm of the target composition (revap), while the difference between such ratios (Δevap) provided a qualitative estimation of the risk of differential evaporation. The formulated approach enables to evaluate the suitability of aerodynamic levitation synthesis for a given target glass composition: while low melting temperature and low liquidus viscosity (η &lt; 100 Pa s) represent the primary optimal conditions, more viscous materials can still be prepared without major compositional drifts using a more careful melting procedure, especially if revap and Δevap are minimized. © 2023 The Authors. International Journal of Applied Glass Science published by American Ceramics Society and Wiley Periodicals LLC.

Název v anglickém jazyce

Key melt properties for controlled synthesis of glass beads by aerodynamic levitation coupled to laser heating

Popis výsledku anglicky

Binary alkali silicate glasses were synthesized as beads by aerodynamic levitation coupled to laser heating to test the applicability of the method to this compositional range. While bubble-free lithium disilicate beads could be easily obtained, sodium and potassium silicates proved more challenging to melt without significant alkali evaporation: the final samples contained bubbles and exhibited compositional drifts compared to the starting stoichiometry, especially at high SiO2 content. The risk of volatilization from the melts was evaluated empirically: the volatility of each oxide component scaled to the ratio between its melting temperature Tm and the Tm of the target composition (revap), while the difference between such ratios (Δevap) provided a qualitative estimation of the risk of differential evaporation. The formulated approach enables to evaluate the suitability of aerodynamic levitation synthesis for a given target glass composition: while low melting temperature and low liquidus viscosity (η &lt; 100 Pa s) represent the primary optimal conditions, more viscous materials can still be prepared without major compositional drifts using a more careful melting procedure, especially if revap and Δevap are minimized. © 2023 The Authors. International Journal of Applied Glass Science published by American Ceramics Society and Wiley Periodicals LLC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

International Journal of Applied Glass Science

ISSN

2041-1286

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

455-467

Kód UT WoS článku

000946993500001

EID výsledku v databázi Scopus

2-s2.0-85150663326