Temperature dependence of Young's modulus of kaolin-based silicate ceramics with mullite addition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F25%3A00618736" target="_blank" >RIV/61388980:_____/25:00618736 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43931699

Výsledek na webu

<a href="https://hdl.handle.net/11104/0365733" target="_blank" >https://hdl.handle.net/11104/0365733</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.oceram.2025.100774" target="_blank" >10.1016/j.oceram.2025.100774</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Temperature dependence of Young's modulus of kaolin-based silicate ceramics with mullite addition

Popis výsledku v původním jazyce

The temperature dependence of Young's modulus of kaolin-based silicate ceramics with mullite addition fired at 1100, 1200, 1300, 1400 and 1500 °C is investigated using the impulse excitation technique (IET). A minimum is observed at around 1200 °C, followed by a steep increase to ∼120 GPa and a stepwise discontinuity at ∼1270 °C to final values of 60–70 GPa, which are retained up to 1500 °C. This peculiar behavior can be explained by the assumption that the glass melt is able to heal pre-existent microcracks and the softening of the glass phase leads to a splitting of the resonant frequency peak, i.e. a decoupling of the flexural vibrations of the interconnected mullite skeleton (67–75 wt. %) and the interskeletal glassy phase (24–28 wt. %), which finally leads to a discontinuity when the mullite crystals become disconnected and the microstructure of the material changes from bicontinuous to matrix-inclusion type.

Název v anglickém jazyce

Temperature dependence of Young's modulus of kaolin-based silicate ceramics with mullite addition

Popis výsledku anglicky

The temperature dependence of Young's modulus of kaolin-based silicate ceramics with mullite addition fired at 1100, 1200, 1300, 1400 and 1500 °C is investigated using the impulse excitation technique (IET). A minimum is observed at around 1200 °C, followed by a steep increase to ∼120 GPa and a stepwise discontinuity at ∼1270 °C to final values of 60–70 GPa, which are retained up to 1500 °C. This peculiar behavior can be explained by the assumption that the glass melt is able to heal pre-existent microcracks and the softening of the glass phase leads to a splitting of the resonant frequency peak, i.e. a decoupling of the flexural vibrations of the interconnected mullite skeleton (67–75 wt. %) and the interskeletal glassy phase (24–28 wt. %), which finally leads to a discontinuity when the mullite crystals become disconnected and the microstructure of the material changes from bicontinuous to matrix-inclusion type.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/EH22_008%2F0004631" target="_blank" >EH22_008/0004631: Materiály a technologie pro udržitelný rozvoj</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Open Ceramics

ISSN

2666-5395

e-ISSN

2666-5395

Svazek periodika

22

Číslo periodika v rámci svazku

JUN

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

100774

Kód UT WoS článku

001465495600001

EID výsledku v databázi Scopus

2-s2.0-105001805963