Young's Modulus of Prefired Quartz Porcelain in a Temperature Range of 20-1200 °C

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332340" target="_blank" >RIV/68407700:21110/19:00332340 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/19:00542061

Výsledek na webu

<a href="https://doi.org/10.17222/mit.2018.252" target="_blank" >https://doi.org/10.17222/mit.2018.252</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2018.252" target="_blank" >10.17222/mit.2018.252</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Young's Modulus of Prefired Quartz Porcelain in a Temperature Range of 20-1200 °C

Popis výsledku v původním jazyce

Green samples (50 w/% of kaolin, 25 w/% of quartz and 25 w/% of feldspar) are prefired up to 400-1200 °C and analyzed during their second firing. Thermogravimetry, thermodilatometry and dynamic thermomechanical analyses are performed in a range from room temperature to 1100 °C. In the samples prefired at temperatures of up to 400 °C and 500 °C, the release of physically bound water has a significant influence on Young's modulus, increasing its values by approximate to 25 % and 6.5 %, respectively, between room temperature and 200 °C. In the samples prefired at temperatures above 500 °C. the alpha -> beta transition of quartz governs Young's modulus in a temperature interval of 500-700 °C. Young's modulus increases by 29-40 % in the samples prefired at 600-1200 °C due to the closing of the cracks located around quartz grains. The presence of a glassy phase is not necessary for the steep increase of Young's modulus around the alpha -> beta transition of quartz. At high temperatures, an increase in Young's modulus is caused by solid-phase sintering (above 800 degrees C), formation of Al-Si spinel (approximate to 950-980 °C) and crystallization of mullite (above 1050 °C).

Název v anglickém jazyce

Young's Modulus of Prefired Quartz Porcelain in a Temperature Range of 20-1200 °C

Popis výsledku anglicky

Green samples (50 w/% of kaolin, 25 w/% of quartz and 25 w/% of feldspar) are prefired up to 400-1200 °C and analyzed during their second firing. Thermogravimetry, thermodilatometry and dynamic thermomechanical analyses are performed in a range from room temperature to 1100 °C. In the samples prefired at temperatures of up to 400 °C and 500 °C, the release of physically bound water has a significant influence on Young's modulus, increasing its values by approximate to 25 % and 6.5 %, respectively, between room temperature and 200 °C. In the samples prefired at temperatures above 500 °C. the alpha -> beta transition of quartz governs Young's modulus in a temperature interval of 500-700 °C. Young's modulus increases by 29-40 % in the samples prefired at 600-1200 °C due to the closing of the cracks located around quartz grains. The presence of a glassy phase is not necessary for the steep increase of Young's modulus around the alpha -> beta transition of quartz. At high temperatures, an increase in Young's modulus is caused by solid-phase sintering (above 800 degrees C), formation of Al-Si spinel (approximate to 950-980 °C) and crystallization of mullite (above 1050 °C).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Materials and Technology

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

53

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

7

Strana od-do

535-541

Kód UT WoS článku

000476652700012

EID výsledku v databázi Scopus

2-s2.0-85069714405