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PRAJZLER, V. PRŮŠA, S. MACA, K.
Originální název
Rapid pressure-less sintering of fine grained zirconia ceramics: Explanation and elimination of a core-shell structure
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Rapid pressure-less sintering of nanoparticle yttria-stabilized zirconia (YSZ) can result in the formation of a gradient structure characterized by an airtight layer at the surface and interconnected porosity inside the sintered compact. This structure constrains a sample from further shrinkage and limits its final density. In this study, we rapidly sintered green bodies prepared from four commercially available YSZ powder grades, all with a particle size of 60 nm, but with different chemical compositions. We have shown that all powders contained residual chlorine which is responsible for the above mentioned core-shell structure of rapidly sintered samples rather than low thermal conductivity of zirconia. The only sample without this gradient structure was prepared from the powder grade with an increased amount of binder that helped to reduce the chlorine content during binder burnout. The ultimate way for elimination of negative chlorine effect was annealing the sample at 1000 °C prior to rapid sintering.
Klíčová slova
Zirconia Rapid sintering Core-shell structure Residual chlorine
Autoři
PRAJZLER, V.; PRŮŠA, S.; MACA, K.
Vydáno
1. 12. 2019
ISSN
0955-2219
Periodikum
Journal of the European Ceramic Society
Ročník
39
Číslo
16
Stát
Spojené království Velké Británie a Severního Irska
Strany od
5309
Strany do
5319
Strany počet
11
URL
https://www.sciencedirect.com/science/article/pii/S0955221919305400
BibTex
@article{BUT159299, author="Vladimír {Prajzler} and Stanislav {Průša} and Karel {Maca}", title="Rapid pressure-less sintering of fine grained zirconia ceramics: Explanation and elimination of a core-shell structure", journal="Journal of the European Ceramic Society", year="2019", volume="39", number="16", pages="5309--5319", doi="10.1016/j.jeurceramsoc.2019.07.053", issn="0955-2219", url="https://www.sciencedirect.com/science/article/pii/S0955221919305400" }