Microstructure and Young's modulus evolution during re-sintering of partially sintered alumina-zirconia composites (ATZ ceramics)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923171" target="_blank" >RIV/60461373:22310/21:43923171 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jeurceramsoc.2021.01.045" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2021.01.045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2021.01.045" target="_blank" >10.1016/j.jeurceramsoc.2021.01.045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure and Young's modulus evolution during re-sintering of partially sintered alumina-zirconia composites (ATZ ceramics)

Popis výsledku v původním jazyce

Partially and fully sintered alumina-zirconia composites (ATZ ceramics), with porosities decreasing from 53.5 to 1 %, have been prepared by uniaxial pressing and firing at 1000-1500 degrees C and characterized by the Archimedes method and mercury intrusion porosimetry. Young&apos;s modulus has been measured via the impulse excitation technique at room temperature, resulting in an almost exponential porosity dependence (which is unusual for partially sintered ceramics in which the microstructure is dominated by concave pore surfaces), and at elevated temperatures up to 1500 degrees C during heating and cooling, resulting in a temperature master curve with a low temperature inflection point around 200 degrees C (accompanied by a damping maximum). Both results confirm previous findings for zirconia and are typical for zirconia-containing ceramics. When the original firing temperature is exceeded, sintering and densification continues, albeit with a temperature lag when the sintering activity (specific surface area) is reduced as a consequence of previous firing.

Název v anglickém jazyce

Microstructure and Young's modulus evolution during re-sintering of partially sintered alumina-zirconia composites (ATZ ceramics)

Popis výsledku anglicky

Partially and fully sintered alumina-zirconia composites (ATZ ceramics), with porosities decreasing from 53.5 to 1 %, have been prepared by uniaxial pressing and firing at 1000-1500 degrees C and characterized by the Archimedes method and mercury intrusion porosimetry. Young&apos;s modulus has been measured via the impulse excitation technique at room temperature, resulting in an almost exponential porosity dependence (which is unusual for partially sintered ceramics in which the microstructure is dominated by concave pore surfaces), and at elevated temperatures up to 1500 degrees C during heating and cooling, resulting in a temperature master curve with a low temperature inflection point around 200 degrees C (accompanied by a damping maximum). Both results confirm previous findings for zirconia and are typical for zirconia-containing ceramics. When the original firing temperature is exceeded, sintering and densification continues, albeit with a temperature lag when the sintering activity (specific surface area) is reduced as a consequence of previous firing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

—

Svazek periodika

41

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

11

Strana od-do

3559-3569

Kód UT WoS článku

000635785900003

EID výsledku v databázi Scopus

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