Sintering kinetics at constant rates of heating: Effect of alumina on the initial sintering stage of Yttria-stabilized cubic zirconia powder

Koji Matsui, Kenji Tanaka, Naoya Enomoto, Junichi Hojo

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The sintering behavior of 7.8 mol% Yttria-stabilized cubic stabilized zirconia (Y-CSZ) powders was investigated, with emphasis on the effect of Al 2 O 3 addition at the initial sintering stage. The shrinkage of powder compact was measured under constant rates of heating (CRH). The powder compact with 0.25 mass% Al 2 O 3 enhanced the densification rate with elevating temperature. The activation energies at the initial stage of sintering were determined by analyzing the densification curves. The activation energy of powder compact with Al 2 O 3 was lower than that of powder compact without Al 2 O 3 . The diffusion mechanisms at the initial sintering stage were determined by the new analytical method applied to the CRH data. This analysis exhibited that the diffusion mechanism changed from grain boundary to volume diffusions (VD) by Al 2 O 3 addition. It is therefore coneluded that the Al 2 O 3 addition enhances the densification rate because of decreasing the activation energy of VD at the initial sintering stage.

Original languageEnglish
Pages (from-to)763-768
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume114
Issue number1333
DOIs
Publication statusPublished - Jan 1 2006

Fingerprint

Yttrium oxide
Aluminum Oxide
zirconium oxides
Zirconia
Powders
sintering
Alumina
Sintering
aluminum oxides
Heating
densification
Kinetics
heating
Densification
kinetics
Activation energy
activation energy
shrinkage
Grain boundaries
grain boundaries

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Sintering kinetics at constant rates of heating : Effect of alumina on the initial sintering stage of Yttria-stabilized cubic zirconia powder. / Matsui, Koji; Tanaka, Kenji; Enomoto, Naoya; Hojo, Junichi.

In: Journal of the Ceramic Society of Japan, Vol. 114, No. 1333, 01.01.2006, p. 763-768.

Research output: Contribution to journalArticle

@article{8ea5cc270b64408d815a0f43c0d8bc34,
title = "Sintering kinetics at constant rates of heating: Effect of alumina on the initial sintering stage of Yttria-stabilized cubic zirconia powder",
abstract = "The sintering behavior of 7.8 mol{\%} Yttria-stabilized cubic stabilized zirconia (Y-CSZ) powders was investigated, with emphasis on the effect of Al 2 O 3 addition at the initial sintering stage. The shrinkage of powder compact was measured under constant rates of heating (CRH). The powder compact with 0.25 mass{\%} Al 2 O 3 enhanced the densification rate with elevating temperature. The activation energies at the initial stage of sintering were determined by analyzing the densification curves. The activation energy of powder compact with Al 2 O 3 was lower than that of powder compact without Al 2 O 3 . The diffusion mechanisms at the initial sintering stage were determined by the new analytical method applied to the CRH data. This analysis exhibited that the diffusion mechanism changed from grain boundary to volume diffusions (VD) by Al 2 O 3 addition. It is therefore coneluded that the Al 2 O 3 addition enhances the densification rate because of decreasing the activation energy of VD at the initial sintering stage.",
author = "Koji Matsui and Kenji Tanaka and Naoya Enomoto and Junichi Hojo",
year = "2006",
month = "1",
day = "1",
doi = "10.2109/jcersj.114.763",
language = "English",
volume = "114",
pages = "763--768",
journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
issn = "1882-0743",
publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
number = "1333",

}

TY - JOUR

T1 - Sintering kinetics at constant rates of heating

T2 - Effect of alumina on the initial sintering stage of Yttria-stabilized cubic zirconia powder

AU - Matsui, Koji

AU - Tanaka, Kenji

AU - Enomoto, Naoya

AU - Hojo, Junichi

PY - 2006/1/1

Y1 - 2006/1/1

N2 - The sintering behavior of 7.8 mol% Yttria-stabilized cubic stabilized zirconia (Y-CSZ) powders was investigated, with emphasis on the effect of Al 2 O 3 addition at the initial sintering stage. The shrinkage of powder compact was measured under constant rates of heating (CRH). The powder compact with 0.25 mass% Al 2 O 3 enhanced the densification rate with elevating temperature. The activation energies at the initial stage of sintering were determined by analyzing the densification curves. The activation energy of powder compact with Al 2 O 3 was lower than that of powder compact without Al 2 O 3 . The diffusion mechanisms at the initial sintering stage were determined by the new analytical method applied to the CRH data. This analysis exhibited that the diffusion mechanism changed from grain boundary to volume diffusions (VD) by Al 2 O 3 addition. It is therefore coneluded that the Al 2 O 3 addition enhances the densification rate because of decreasing the activation energy of VD at the initial sintering stage.

AB - The sintering behavior of 7.8 mol% Yttria-stabilized cubic stabilized zirconia (Y-CSZ) powders was investigated, with emphasis on the effect of Al 2 O 3 addition at the initial sintering stage. The shrinkage of powder compact was measured under constant rates of heating (CRH). The powder compact with 0.25 mass% Al 2 O 3 enhanced the densification rate with elevating temperature. The activation energies at the initial stage of sintering were determined by analyzing the densification curves. The activation energy of powder compact with Al 2 O 3 was lower than that of powder compact without Al 2 O 3 . The diffusion mechanisms at the initial sintering stage were determined by the new analytical method applied to the CRH data. This analysis exhibited that the diffusion mechanism changed from grain boundary to volume diffusions (VD) by Al 2 O 3 addition. It is therefore coneluded that the Al 2 O 3 addition enhances the densification rate because of decreasing the activation energy of VD at the initial sintering stage.

UR - http://www.scopus.com/inward/record.url?scp=33748319571&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748319571&partnerID=8YFLogxK

U2 - 10.2109/jcersj.114.763

DO - 10.2109/jcersj.114.763

M3 - Article

AN - SCOPUS:33748319571

VL - 114

SP - 763

EP - 768

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

SN - 1882-0743

IS - 1333

ER -