Processing of zirconia nanoceramics from a coarse powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F15%3APU112286" target="_blank" >RIV/00216305:26620/15:PU112286 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2014.10.022" target="_blank" >http://dx.doi.org/10.1016/j.jeurceramsoc.2014.10.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2014.10.022" target="_blank" >10.1016/j.jeurceramsoc.2014.10.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Processing of zirconia nanoceramics from a coarse powder

Popis výsledku v původním jazyce

We have merged the benefits of coarse-grained and nanocrystalline powders by the consolidation and sintering of coarse, yet nanostructured,mesoporous Y-TZP powder. The powder was composed of loosely aggregated, nanoscale crystallites, which can be seen as secondary particles oragglomerates. Their homogeneous, defect-free packing proved to be a viable pathway for the processing of zirconia nanoceramics. The powderconsolidation yielded homogeneous green bodies with hierarchical heterogeneities in terms of intra- and inter-particle pore packing. The hierarchicalheterogeneities had a pronounced effect on the densification and grain growth. The intra-particle pore coalescence along with a frozen inter-particle porosity, prolonged the pore-pinning effect, separating the densification and grain-growth mechanisms. Increased heating rates promoted thegrain growth and densification via a competitive mechanism of primary crystallite ordered coalescence, while by applying pressure, the crystallitegrowth was completely prevented, making such a coarse powder suitable for the fabrication of zirconia nanoceramics.

Název v anglickém jazyce

Processing of zirconia nanoceramics from a coarse powder

Popis výsledku anglicky

We have merged the benefits of coarse-grained and nanocrystalline powders by the consolidation and sintering of coarse, yet nanostructured,mesoporous Y-TZP powder. The powder was composed of loosely aggregated, nanoscale crystallites, which can be seen as secondary particles oragglomerates. Their homogeneous, defect-free packing proved to be a viable pathway for the processing of zirconia nanoceramics. The powderconsolidation yielded homogeneous green bodies with hierarchical heterogeneities in terms of intra- and inter-particle pore packing. The hierarchicalheterogeneities had a pronounced effect on the densification and grain growth. The intra-particle pore coalescence along with a frozen inter-particle porosity, prolonged the pore-pinning effect, separating the densification and grain-growth mechanisms. Increased heating rates promoted thegrain growth and densification via a competitive mechanism of primary crystallite ordered coalescence, while by applying pressure, the crystallitegrowth was completely prevented, making such a coarse powder suitable for the fabrication of zirconia nanoceramics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GP13-08717P" target="_blank" >GP13-08717P: Efekt elektro-magnetického pole na slinování pokročilých keramických materiálů</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

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

1873-619X

Svazek periodika

35

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1285-1295

Kód UT WoS článku

000348084300016

EID výsledku v databázi Scopus

2-s2.0-84920533496