Residual chlorine prevents full densification of flash sintered yttria-stabilized zirconia ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU152455" target="_blank" >RIV/00216305:26620/24:PU152455 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0955221924003236?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221924003236?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2024.04.017" target="_blank" >10.1016/j.jeurceramsoc.2024.04.017</a>
Alternative languages
Result language
angličtina
Original language name
Residual chlorine prevents full densification of flash sintered yttria-stabilized zirconia ceramics
Original language description
The densification of yttria-stabilized zirconia (YSZ) during flash sintering is strongly dependent on the amount of residual chlorine in the sintered bodies. The residual chlorine, present as a remnant from powder synthesis, hinders densification after it is trapped and vaporized in the rapidly closing pores, limiting the final density at around 87 - 93% of theoretical. We show that this phenomenon is likely to affect all YSZ powders synthesized from chloride precursors unless the residual chlorine is reduced to <= 0.03 wt% before the onset of the flash sintering. This can be universally achieved by thermal purification of green bodies at a high temperature or by chemical purification in ammonium hydroxide. Furthermore, added binder in commercially available Tosoh zirconia TZ-powders (TZ-3YB, TZ-3YB-E) helps to significantly reduce chlorine content during binder burnout which in turn allows flash sintering into a high density even without green body purification.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/GN22-30487O" target="_blank" >GN22-30487O: Ultra-fast sintering of advanced ceramic materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN
0955-2219
e-ISSN
1873-619X
Volume of the periodical
44
Issue of the periodical within the volume
11
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
6660-6667
UT code for WoS article
001240562500001
EID of the result in the Scopus database
2-s2.0-85190110601