Gas release phenomena in soda-lime-silica glass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916869" target="_blank" >RIV/60461373:22310/18:43916869 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985891:_____/18:00497030

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0022309318304563?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309318304563?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2018.07.058" target="_blank" >10.1016/j.jnoncrysol.2018.07.058</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gas release phenomena in soda-lime-silica glass

Popis výsledku v původním jazyce

Heterogeneous bubble nucleation during the production of commercial glasses is one of the negative factors affecting their technology and technical properties. In order to eliminate these bubbles, we conducted extensive research of bubble nucleation in soda-lime-silica glass melts at increasing temperatures and variable redox states of glass. Evolved gas analysis (EGA) coupled with gas chromatography and mass spectrometry were used to identify and evaluate crucial chemical reactions during the melting. The reactions were indicated also by the bubble compositions estimated from bubble contraction during the temperature drop. The fining action of sulfates in the reducing conditions was observed at temperatures between 1200 and 1300°C using high temperature monitoring. This was confirmed by the relatively high average values of the bubble growth rates. In addition, extensive nucleation of bubbles took place at relatively low temperatures. The temperature region of nucleation was determined by monitoring bubble nucleation on the Pt wire immersed in the melt at increasing temperatures. The nucleation of the bubbles in variously reduced glasses has been observed at temperatures even lower than 1300°C which further decreased with the increasing C/SO42- ratio. Next, we tried to clarify whether the process of bubble nucleation at a low redox state of glass was caused by supersaturation of the glass melt by either physically dissolved or chemically bound gases. We suppose that the nucleation of bubbles SO2 around 1300°C can be attributed to the reaction between the sulfate remaining in melts and sulfides which have been formed by reduction reactions.

Název v anglickém jazyce

Gas release phenomena in soda-lime-silica glass

Popis výsledku anglicky

Heterogeneous bubble nucleation during the production of commercial glasses is one of the negative factors affecting their technology and technical properties. In order to eliminate these bubbles, we conducted extensive research of bubble nucleation in soda-lime-silica glass melts at increasing temperatures and variable redox states of glass. Evolved gas analysis (EGA) coupled with gas chromatography and mass spectrometry were used to identify and evaluate crucial chemical reactions during the melting. The reactions were indicated also by the bubble compositions estimated from bubble contraction during the temperature drop. The fining action of sulfates in the reducing conditions was observed at temperatures between 1200 and 1300°C using high temperature monitoring. This was confirmed by the relatively high average values of the bubble growth rates. In addition, extensive nucleation of bubbles took place at relatively low temperatures. The temperature region of nucleation was determined by monitoring bubble nucleation on the Pt wire immersed in the melt at increasing temperatures. The nucleation of the bubbles in variously reduced glasses has been observed at temperatures even lower than 1300°C which further decreased with the increasing C/SO42- ratio. Next, we tried to clarify whether the process of bubble nucleation at a low redox state of glass was caused by supersaturation of the glass melt by either physically dissolved or chemically bound gases. We suppose that the nucleation of bubbles SO2 around 1300°C can be attributed to the reaction between the sulfate remaining in melts and sulfides which have been formed by reduction reactions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/TH02020316" target="_blank" >TH02020316: Pokročilé technologie výroby skel</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Non-crystalline Solids

ISSN

0022-3093

e-ISSN

—

Svazek periodika

500

Číslo periodika v rámci svazku

November 2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

158-166

Kód UT WoS článku

000447096600020

EID výsledku v databázi Scopus

2-s2.0-85050958861