Detail publikace

Rapid densification of low-positive thermal expansion Al2W3O12 ceramics

MAŘÁK, V. HENRIQUES, M. MARINKOVIC, B. DRDLÍK, D.

Originální název

Rapid densification of low-positive thermal expansion Al2W3O12 ceramics

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The Al2W3O12 ceramic with near-zero thermal expansion is a promising candidate for thermal shock resistance applications. However, the often-reported microcracks in the microstructure hinder the practical use of Al2W3O12. This work focuses on optimising the material processing—powder synthesis, calcination, milling, and sintering—to prepare dense polycrystalline Al2W3O12 with fine microcrack-free microstructure. The amorphous powder produced by the co-precipitation method had the highest specific surface area reported for this material, resulting in improved sinterability. Two rapid sintering methods were employed—Rapid Pressure-less Sintering and Spark Plasma Sintering. Both methods led to shorter processing times and lower sintering temperatures. However, Al2W3O12 samples produced by Spark Plasma Sintering were nearly fully dense with a density of ∼98% of theoretical density, the best value reported to date for this phase. The obtained fine crack-free microstructure of the samples led to a superior mechanical response compared to that achieved by Rapid Pressure-less Sintering.

Klíčová slova

Near-zero thermal expansion, A2M3O12, Spark plasma sintering, Rapid pressure-less sintering, Vickers hardness

Autoři

MAŘÁK, V.; HENRIQUES, M.; MARINKOVIC, B.; DRDLÍK, D.

Vydáno

1. 9. 2024

Nakladatel

Elsevier

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Ročník

44

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

6548

Strany do

6555

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S0955221924003583?via%3Dihub

BibTex

@article{BUT188424,
  author="Vojtěch {Mařák} and Marianne Diniz Rocha {Henriques} and Bojan A. {Marinkovic} and Daniel {Drdlík}",
  title="Rapid densification of low-positive thermal expansion Al2W3O12 ceramics",
  journal="Journal of the European Ceramic Society",
  year="2024",
  volume="44",
  number="11",
  pages="6548--6555",
  doi="10.1016/j.jeurceramsoc.2024.04.036",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221924003583?via%3Dihub"
}