Effect of Al2O3 on the sinterability of fine zirconia powder

K. Matsui; N. Etoh; M. Ohgai; M. Uehara; N. Enomoto; J. Hojo

Effect of Al₂O₃ on the sinterability of fine zirconia powder

K. Matsui, N. Etoh, M. Ohgai, M. Uehara, N. Enomoto, J. Hojo

Research output: Contribution to journal › Conference article › peer-review

Abstract

The sinterabilities of fine zirconia powders including 5mass% Y₂O₃ were investigated with emphasis oh the effect of Al₂O₃. The powders were pressed into a disk and sintered at 1300-1500°C in air. With a small amount of Al₂O₃, high-density sintered bodies were obtained at a low temperature. The shrinkage of powder compact in the course of heating was measured by a dilatometric method, indicating that the powder compact including a small amount of Al₂O₃ increased the densification rate. The activation energies of sintering were determined by analyzing the densification curves. The activation energy for initial stage of sintering decreased by including a small amount of Al₂O₃. It is, therefore, concluded that the effect of Al₂O₃ increased the densification rate because of decreasing the activation energy for initial stage of sintering.

Original language	English
Pages (from-to)	345-348
Number of pages	4
Journal	Key Engineering Materials
Volume	206-213
Issue number	I
Publication status	Published - Jan 1 2001
Event	7th Conference of the European Ceramic Society - Brugge, Belgium Duration: Sept 9 2001 → Sept 13 2001

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Effect of Al2O3 on the sinterability of fine zirconia powder",

abstract = "The sinterabilities of fine zirconia powders including 5mass% Y2O3 were investigated with emphasis oh the effect of Al2O3. The powders were pressed into a disk and sintered at 1300-1500°C in air. With a small amount of Al2O3, high-density sintered bodies were obtained at a low temperature. The shrinkage of powder compact in the course of heating was measured by a dilatometric method, indicating that the powder compact including a small amount of Al2O3 increased the densification rate. The activation energies of sintering were determined by analyzing the densification curves. The activation energy for initial stage of sintering decreased by including a small amount of Al2O3. It is, therefore, concluded that the effect of Al2O3 increased the densification rate because of decreasing the activation energy for initial stage of sintering.",

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TY - JOUR

T1 - Effect of Al2O3 on the sinterability of fine zirconia powder

AU - Matsui, K.

AU - Etoh, N.

AU - Ohgai, M.

AU - Uehara, M.

AU - Enomoto, N.

AU - Hojo, J.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The sinterabilities of fine zirconia powders including 5mass% Y2O3 were investigated with emphasis oh the effect of Al2O3. The powders were pressed into a disk and sintered at 1300-1500°C in air. With a small amount of Al2O3, high-density sintered bodies were obtained at a low temperature. The shrinkage of powder compact in the course of heating was measured by a dilatometric method, indicating that the powder compact including a small amount of Al2O3 increased the densification rate. The activation energies of sintering were determined by analyzing the densification curves. The activation energy for initial stage of sintering decreased by including a small amount of Al2O3. It is, therefore, concluded that the effect of Al2O3 increased the densification rate because of decreasing the activation energy for initial stage of sintering.

AB - The sinterabilities of fine zirconia powders including 5mass% Y2O3 were investigated with emphasis oh the effect of Al2O3. The powders were pressed into a disk and sintered at 1300-1500°C in air. With a small amount of Al2O3, high-density sintered bodies were obtained at a low temperature. The shrinkage of powder compact in the course of heating was measured by a dilatometric method, indicating that the powder compact including a small amount of Al2O3 increased the densification rate. The activation energies of sintering were determined by analyzing the densification curves. The activation energy for initial stage of sintering decreased by including a small amount of Al2O3. It is, therefore, concluded that the effect of Al2O3 increased the densification rate because of decreasing the activation energy for initial stage of sintering.

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AN - SCOPUS:0034782609

SN - 1013-9826

VL - 206-213

SP - 345

EP - 348

JO - Key Engineering Materials

JF - Key Engineering Materials

IS - I

T2 - 7th Conference of the European Ceramic Society

Y2 - 9 September 2001 through 13 September 2001

ER -

Effect of Al₂O₃ on the sinterability of fine zirconia powder

Abstract

All Science Journal Classification (ASJC) codes

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