Detail publikačního výsledku

Abnormal grain growth in DC flash sintered 3-mol% yttria-stabilized zirconia ceramics

PRAJZLER, V.; MACA, K.; ŠŤASTNÝ, P.; TODD, R.

Originální název

Abnormal grain growth in DC flash sintered 3-mol% yttria-stabilized zirconia ceramics

Anglický název

Abnormal grain growth in DC flash sintered 3-mol% yttria-stabilized zirconia ceramics

Druh

Článek WoS

Originální abstrakt

The origin of nonuniform microstructure and abnormal grain growth (AGG) was investigated in flash sintered 3 mol% yttria-stabilized zirconia (3YSZ) ceramics. The microstructural homogeneity decreased with increasing direct current (DC) density and with dwell time in a flash state, eventually resulting in AGG in the specimen core, the first observation of AGG in 3YSZ. Abnormal grains up to 100 mu m in size emerged when the DC density was >= 160 mA/mm(2), and the specimen's density exceeded 99% of theoretical, starting from the cathode and propagating toward the anode. The results are discussed by comparison with established mechanisms and previous experimental evidence concerning AGG in oxides, focusing on the possible effects of the electrochemical reduction at the cathode end of the specimen.

Anglický abstrakt

The origin of nonuniform microstructure and abnormal grain growth (AGG) was investigated in flash sintered 3 mol% yttria-stabilized zirconia (3YSZ) ceramics. The microstructural homogeneity decreased with increasing direct current (DC) density and with dwell time in a flash state, eventually resulting in AGG in the specimen core, the first observation of AGG in 3YSZ. Abnormal grains up to 100 mu m in size emerged when the DC density was >= 160 mA/mm(2), and the specimen's density exceeded 99% of theoretical, starting from the cathode and propagating toward the anode. The results are discussed by comparison with established mechanisms and previous experimental evidence concerning AGG in oxides, focusing on the possible effects of the electrochemical reduction at the cathode end of the specimen.

Klíčová slova

abnormal grain growth; field assisted sintering technology (FAST); grain growth; zirconia; yttria stabilized

Klíčová slova v angličtině

abnormal grain growth; field assisted sintering technology (FAST); grain growth; zirconia; yttria stabilized

Autoři

PRAJZLER, V.; MACA, K.; ŠŤASTNÝ, P.; TODD, R.

Rok RIV

2023

Vydáno

01.09.2022

Nakladatel

WILEY

Místo

HOBOKEN

ISSN

0002-7820

Periodikum

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Svazek

105

Číslo

9

Stát

Spojené státy americké

Strany od

5562

Strany do

5568

Strany počet

7

URL

https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18542

BibTex

@article{BUT178465,
  author="Vladimír {Prajzler} and Karel {Maca} and Přemysl {Šťastný} and Richard I. {Todd}",
  title="Abnormal grain growth in DC flash sintered 3-mol% yttria-stabilized zirconia ceramics",
  journal="JOURNAL OF THE AMERICAN CERAMIC SOCIETY",
  year="2022",
  volume="105",
  number="9",
  pages="5562--5568",
  doi="10.1111/jace.18542",
  issn="0002-7820",
  url="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18542"
}