Microstructure and texture evolution during growth of magnesio-aluminate spinel at corundum-periclase interfaces under uniaxial load: The effect of stress concentration on reaction progress

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10283568" target="_blank" >RIV/00216208:11310/14:10283568 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2475/05.2014.02" target="_blank" >http://dx.doi.org/10.2475/05.2014.02</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2475/05.2014.02" target="_blank" >10.2475/05.2014.02</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure and texture evolution during growth of magnesio-aluminate spinel at corundum-periclase interfaces under uniaxial load: The effect of stress concentration on reaction progress

Popis výsledku v původním jazyce

Reaction rims of magnesio-aluminate spinel were grown at the contacts between peridase and corundum at temperatures of 1250 degrees C to 1350 degrees C and under uniaxial load of 0.026 and 0.26 kN per 9 mm(2) of initial contact area. Single crystals of periclase with [100] and of corundum with [0001] perpendicular to the polished reaction interface as well as polycrystalline corundum were used as starting materials. Immediate application of the load before heating resulted in deformation twinning and fracturing of corundum introducing stress concentration and lateral variations in the quality of physical contact at the reaction interface. The tight contacts are characterized by enhanced reaction progress which together with the positive volume change of the reaction and limits on plasticity of the studied phases led to the opening of void spaces along the reaction interface and large lateral variations in rim thickness occur. Spinel shows strong topotactic relations to the reactant pha

Název v anglickém jazyce

Microstructure and texture evolution during growth of magnesio-aluminate spinel at corundum-periclase interfaces under uniaxial load: The effect of stress concentration on reaction progress

Popis výsledku anglicky

Reaction rims of magnesio-aluminate spinel were grown at the contacts between peridase and corundum at temperatures of 1250 degrees C to 1350 degrees C and under uniaxial load of 0.026 and 0.26 kN per 9 mm(2) of initial contact area. Single crystals of periclase with [100] and of corundum with [0001] perpendicular to the polished reaction interface as well as polycrystalline corundum were used as starting materials. Immediate application of the load before heating resulted in deformation twinning and fracturing of corundum introducing stress concentration and lateral variations in the quality of physical contact at the reaction interface. The tight contacts are characterized by enhanced reaction progress which together with the positive volume change of the reaction and limits on plasticity of the studied phases led to the opening of void spaces along the reaction interface and large lateral variations in rim thickness occur. Spinel shows strong topotactic relations to the reactant pha

Druh

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

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

American Journal of Science

ISSN

0002-9599

e-ISSN

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Svazek periodika

314

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

26

Strana od-do

940-965

Kód UT WoS článku

000345105200002

EID výsledku v databázi Scopus

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