About: Cracking of quartz porcelain during heating stage of firing

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The acoustic emission (AE) technique was used for real time monitoring of microcracking in the green quartz porcelain mixture (50 wt. % kaolin, 25 wt. % quartz and 25 wt. % feldspar) submitted to heating up to 1100 oC. Two sources of microcracking were identified. The first one, which begins at the temperature 50 oC, is connected to liberation of the physically bounded water. The second source is connected to differences between thermal expansions of crystals (kaolinite/metakaolinite, feldspar and -quartz/-quartz). The transformation of -quartz -quartz, which takes place at 570 oC, is not registered with AE. The vanishing of cracking at 600 oC correlates with the increase in Young's modulus and it is ascribed to solid-state sintering, which fortifies boundaries between crystals (metakaolinite, feldspar and -quartz). The acoustic emission (AE) technique was used for real time monitoring of microcracking in the green quartz porcelain mixture (50 wt. % kaolin, 25 wt. % quartz and 25 wt. % feldspar) submitted to heating up to 1100 oC. Two sources of microcracking were identified. The first one, which begins at the temperature 50 oC, is connected to liberation of the physically bounded water. The second source is connected to differences between thermal expansions of crystals (kaolinite/metakaolinite, feldspar and -quartz/-quartz). The transformation of -quartz -quartz, which takes place at 570 oC, is not registered with AE. The vanishing of cracking at 600 oC correlates with the increase in Young's modulus and it is ascribed to solid-state sintering, which fortifies boundaries between crystals (metakaolinite, feldspar and -quartz). (en)
Title	Cracking of quartz porcelain during heating stage of firing Cracking of quartz porcelain during heating stage of firing (en)
skos:prefLabel	Cracking of quartz porcelain during heating stage of firing Cracking of quartz porcelain during heating stage of firing (en)
skos:notation	RIV/00216208:11320/11:10108684!RIV12-GA0-11320___
http://linked.open...avai/predkladatel	Matematicko-fyzikální fakulta
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP108/11/1267), Z(MSM0021620834)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Chmelík, František
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	192173
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10108684
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	firing; heating stage; quartz porcelain; Cracking (en)
http://linked.open.../riv/klicoveSlovo	Cracking firing heating stage quartz porcelain
http://linked.open...ontrolniKodProRIV	[D72363D5C888]
http://linked.open...v/mistoKonaniAkce	Zvolen
http://linked.open...i/riv/mistoVydani	Zvolen
http://linked.open...i/riv/nazevZdroje	Proceedings
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Multiscale investigation of plastic deformation processes in materials by the acoustic emission technique
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Chmelík, František Trník, Anton Štubňa, Igor Šín, Peter
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2011-09-12 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Technická univerzita vo Zvolene
https://schema.org/isbn	978-80-228-2259-6
http://localhost/t...ganizacniJednotka	11320
is http://linked.open...avai/riv/vysledek of	Cracking of quartz porcelain during heating stage of firing Cracking of quartz porcelain during heating stage of firing

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