High-temperature elastic properties of ceramics in the system MgO-Al2O3-SiO2 measured by impulse excitation
The result's identifiers
Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
High-temperature elastic properties of ceramics in the system MgO-Al2O3-SiO2 measured by impulse excitation
Original language description
Young's moduli of talc-based ceramics from the system MgO-Al2O3-SiO2 are measured for temperatures up to 1000 °C via impulse excitation. It is shown that, after pressing at 50 MPa and firing at 1280 °C, MgO-rich compositions exhibit higher porosity and lower Young's moduli (approximately 20-30 % lower than predicted via micromechanical relations). The Young moduli of materials with less MgO decrease with temperature, but those of MgO-rich ceramics increase with temperature and exhibit a large hysteresisbetween heating and cooling. Lower absolute values are mainly due to increased porosity, but the reason for the modulus increase with temperature and the hysteresis is the higher enstatite content in the MgO-rich compositions. For a special compositionthe Young's moduli are more or less temperature-independent and without significant hysteresis effects, probably due to the low content of enstatite and the high content of sapphirine.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Selected, peer reviewed papers from the 7th International Conference on Materials Structure and Micromechanics of Fracture MSMF7
ISBN
978-3-03785-934-6
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
696-699
Publisher name
Trans Tech Publications
Place of publication
Zürich
Event location
Brno (Czech Republic)
Event date
Jul 1, 2013
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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