Temperature dependence of Young's modulus of silica refractories

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43898242" target="_blank" >RIV/60461373:22310/15:43898242 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985891:_____/15:00472845

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Temperature dependence of Young's modulus of silica refractories

Popis výsledku v původním jazyce

The temperature dependence of Young's modulus of silica refractories exhibiting pore volume fractions in the range 18.6-20.9% is investigated via impulse excitation up to 800-1000 1C and four-point bending up to 500 1C. This temperature dependence exhibits a broad valley approximately below 200 1C, where Young's modulus values decrease to 55-62% of their room temperature magnitude. Upon further heating, Young's modulus increases steeply within a few degrees around 230 1C, followed by an S-shaped increase to maximum values corresponding to 174-282% of the room temperature values. Cooling branches are different from heating branches and do not form closed loops, indicating damage accumulation. Dilatation measurements, polarization microscopy, micromechanical calculations and X-ray phase analysis are used to underpin the conclusion that the observed elastic effects are not caused by phase transitions alone, but are combined effects of phase transitions and microcrack opening and partial c

Název v anglickém jazyce

Temperature dependence of Young's modulus of silica refractories

Popis výsledku anglicky

The temperature dependence of Young's modulus of silica refractories exhibiting pore volume fractions in the range 18.6-20.9% is investigated via impulse excitation up to 800-1000 1C and four-point bending up to 500 1C. This temperature dependence exhibits a broad valley approximately below 200 1C, where Young's modulus values decrease to 55-62% of their room temperature magnitude. Upon further heating, Young's modulus increases steeply within a few degrees around 230 1C, followed by an S-shaped increase to maximum values corresponding to 174-282% of the room temperature values. Cooling branches are different from heating branches and do not form closed loops, indicating damage accumulation. Dilatation measurements, polarization microscopy, micromechanical calculations and X-ray phase analysis are used to underpin the conclusion that the observed elastic effects are not caused by phase transitions alone, but are combined effects of phase transitions and microcrack opening and partial c

Druh

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

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F12%2F1170" target="_blank" >GAP108/12/1170: Porézní keramika s řízenou elasticitou a tepelnou vodivostí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

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

41

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

10

Strana od-do

1129-1138

Kód UT WoS článku

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EID výsledku v databázi Scopus

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