Residual chlorine prevents full densification of 3 mol% yttria-stabilized zirconia ceramics during ultrafast high-temperature sintering (UHS)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198751" target="_blank" >RIV/00216305:26620/26:0198751 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0955221925005308" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221925005308</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2025.117709" target="_blank" >10.1016/j.jeurceramsoc.2025.117709</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Residual chlorine prevents full densification of 3 mol% yttria-stabilized zirconia ceramics during ultrafast high-temperature sintering (UHS)

Popis výsledku v původním jazyce

As-received commercially available 3 mol% yttria-stabilized zirconia (3YSZ) powders often contain residual chlorine, an impurity from powder synthesis, which can negatively impact densification during sintering. This is because the ultra-fast heating rate results in rapid pore closure and entrapment of chlorine species in the sintered samples. This study shows that residual chlorine, detected using Low Energy Ion Scattering (LEIS), significantly hindered the densification of binderless 3YSZ during ultrafast high-temperature sintering (UHS), resulting in only 87 % of theoretical density. Although all as-received 3YSZ powders contained chlorine in comparable amounts, powders with added binder allowed the chlorine to be removed at low temperature, resulting in high sintered densities. This finding shows that the use of appropriate 3YSZ powder with zero or low levels of residual chlorine can avoid the necessity of chlorine elimination through pre-sintering at 1000 degrees C, which significantly enhances the effectiveness of the UHS method.

Název v anglickém jazyce

Residual chlorine prevents full densification of 3 mol% yttria-stabilized zirconia ceramics during ultrafast high-temperature sintering (UHS)

Popis výsledku anglicky

As-received commercially available 3 mol% yttria-stabilized zirconia (3YSZ) powders often contain residual chlorine, an impurity from powder synthesis, which can negatively impact densification during sintering. This is because the ultra-fast heating rate results in rapid pore closure and entrapment of chlorine species in the sintered samples. This study shows that residual chlorine, detected using Low Energy Ion Scattering (LEIS), significantly hindered the densification of binderless 3YSZ during ultrafast high-temperature sintering (UHS), resulting in only 87 % of theoretical density. Although all as-received 3YSZ powders contained chlorine in comparable amounts, powders with added binder allowed the chlorine to be removed at low temperature, resulting in high sintered densities. This finding shows that the use of appropriate 3YSZ powder with zero or low levels of residual chlorine can avoid the necessity of chlorine elimination through pre-sintering at 1000 degrees C, which significantly enhances the effectiveness of the UHS method.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

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

45

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

001544062800004

EID výsledku v databázi Scopus

2-s2.0-105012042116