Acoustic emission study of quartz porcelain during heating up to 1150 degrees C

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10132603" target="_blank" >RIV/00216208:11320/12:10132603 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Acoustic emission study of quartz porcelain during heating up to 1150 degrees C

Popis výsledku v původním jazyce

The acoustic emission (AE) technique was used for the real-time monitoring of microcracking in a green quartz porcelain mixture (50 wt% kaolin, 25 wt% quartz and 25 wt% feldspar) subjected to heating up to 1150 degrees C with a heating rate of 5 degreesC/min. Two sources of microcracking were identified. The first one, which begins at a temperature of 50 degrees C, is connected to the liberation of physically bound water. The second source is caused by differences between the thermal expansion of crystals (kaolinite/metakaolinite, feldspar and alpha-quartz/beta-quartz). The alpha -> beta transformation of quartz is not detected with AE. The vanishing of cracking at 600 degrees C correlates with the increase of the Young's modulus and is ascribed to solid-state sintering, which fortifies crystal interfaces between metakaolinite, feldspar and beta-quartz. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Název v anglickém jazyce

Acoustic emission study of quartz porcelain during heating up to 1150 degrees C

Popis výsledku anglicky

The acoustic emission (AE) technique was used for the real-time monitoring of microcracking in a green quartz porcelain mixture (50 wt% kaolin, 25 wt% quartz and 25 wt% feldspar) subjected to heating up to 1150 degrees C with a heating rate of 5 degreesC/min. Two sources of microcracking were identified. The first one, which begins at a temperature of 50 degrees C, is connected to the liberation of physically bound water. The second source is caused by differences between the thermal expansion of crystals (kaolinite/metakaolinite, feldspar and alpha-quartz/beta-quartz). The alpha -> beta transformation of quartz is not detected with AE. The vanishing of cracking at 600 degrees C correlates with the increase of the Young's modulus and is ascribed to solid-state sintering, which fortifies crystal interfaces between metakaolinite, feldspar and beta-quartz. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F11%2F1267" target="_blank" >GAP108/11/1267: Multiškálové studium procesů plastické deformace v materiálech metodou akustické emise</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

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

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Svazek periodika

38

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

4

Strana od-do

6919-6922

Kód UT WoS článku

000309645000111

EID výsledku v databázi Scopus

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