Publication detail

Pore coalescence as an inherent problem in the sintering of zirconia nanoparticles

TRUNEC, M. ŠŤASTNÝ, P. ŠIŠKA VIRÁGOVÁ, E. SOBOLA, D.

Original Title

Pore coalescence as an inherent problem in the sintering of zirconia nanoparticles

Type

journal article in Web of Science

Language

English

Original Abstract

This article investigates the densification behaviour of zirconia nanoparticle compacts sintered at high temperatures. It was shown that zirconia nanoparticle compacts exhibited pore growth and related density decrease after sintering at temperatures above 1100 degrees C. Extensive analytical testing was performed to elucidate this behaviour. The de-densification effect was explained as pore coalescence and swelling. Intensive grain growth at high sintering temperatures induced coalescence of residual pores that remained in the dense structure. The overpressure of a non-diffusing gas entrapped in coalesced pores resulted in their expansion and ceramics swelling. The ceramics swelling was modelled and compared with experimental data. This de-densification behaviour seems to be inherent to all nanozirconia compacts accompanied by large grain coarsening in a dense structure.

Keywords

Zirconia; Nanoparticles; Sintering; Grain growth; Pore coalescence

Authors

TRUNEC, M.; ŠŤASTNÝ, P.; ŠIŠKA VIRÁGOVÁ, E.; SOBOLA, D.

Released

1. 7. 2025

Publisher

ELSEVIER SCI LTD

Location

London

ISBN

1873-619X

Periodical

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

Year of study

45

Number

8

State

United Kingdom of Great Britain and Northern Ireland

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0955221925000925?via%3Dihub

BibTex

@article{BUT197812,
  author="Martin {Trunec} and Přemysl {Šťastný} and Dinara {Sobola} and Eliška {Šiška Virágová}",
  title="Pore coalescence as an inherent problem in the sintering of zirconia nanoparticles",
  journal="JOURNAL OF THE EUROPEAN CERAMIC SOCIETY",
  year="2025",
  volume="45",
  number="8",
  pages="7",
  doi="10.1016/j.jeurceramsoc.2025.117272",
  issn="1873-619X",
  url="https://www.sciencedirect.com/science/article/pii/S0955221925000925?via%3Dihub"
}