Improvement of mechanical properties of Y-TZP via ceria addition and cold isostatic pressing method

Mohamed Aboras, Andanastuti Muchtar, Che Husna Azhari, Norziha Yahaya, Chin Chuin Hao

Research output: Contribution to journalArticle

Abstract

Fabrication and composition of tetragonal zirconia have been extensively studied to enhance its mechanical properties. The present study aims to investigate the mechanical properties of yttrium-stabilized zirconia (Y-TZP) with ceria addition consolidated via cold isostatic pressing (CIP). 3Y-TZP was prepared by slip casting. Another batch of samples was fabricated via slip casting with the addition of 5 wt% of ceria, followed by CIP. All samples were sintered at 1600 °C. Results showed that the density and hardness of Y-TZP increased with the addition of ceria and use of CIP. The density increased from 91.8% to 98% of theoretical density, and the hardness increased from 10.33 GPa to 14.14 GPa. Field-emission scanning electron microscopy (FESEM) images showed that Y-TZP with ceria and consolidated via CIP had more homogenous grain structure with lower porosity. The X-ray diffraction (XRD) analysis showed that the phase was 100% tetragonal for both materials. Ceria addition consolidated via CIP are an effective method to improve the mechanical properties of Y-TZP.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalJurnal Teknologi
Volume77
Issue number6
DOIs
Publication statusPublished - 2015

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Cerium compounds
Mechanical properties
Zirconia
Casting
Hardness
Crystal microstructure
Yttrium
Field emission
X ray diffraction analysis
Porosity
Fabrication
Scanning electron microscopy
Chemical analysis

Keywords

  • Ceria
  • Cold isostatic pressing
  • Slip casting
  • Zirconia

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Improvement of mechanical properties of Y-TZP via ceria addition and cold isostatic pressing method. / Aboras, Mohamed; Muchtar, Andanastuti; Azhari, Che Husna; Yahaya, Norziha; Hao, Chin Chuin.

In: Jurnal Teknologi, Vol. 77, No. 6, 2015, p. 55-59.

Research output: Contribution to journalArticle

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AU - Azhari, Che Husna

AU - Yahaya, Norziha

AU - Hao, Chin Chuin

PY - 2015

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N2 - Fabrication and composition of tetragonal zirconia have been extensively studied to enhance its mechanical properties. The present study aims to investigate the mechanical properties of yttrium-stabilized zirconia (Y-TZP) with ceria addition consolidated via cold isostatic pressing (CIP). 3Y-TZP was prepared by slip casting. Another batch of samples was fabricated via slip casting with the addition of 5 wt% of ceria, followed by CIP. All samples were sintered at 1600 °C. Results showed that the density and hardness of Y-TZP increased with the addition of ceria and use of CIP. The density increased from 91.8% to 98% of theoretical density, and the hardness increased from 10.33 GPa to 14.14 GPa. Field-emission scanning electron microscopy (FESEM) images showed that Y-TZP with ceria and consolidated via CIP had more homogenous grain structure with lower porosity. The X-ray diffraction (XRD) analysis showed that the phase was 100% tetragonal for both materials. Ceria addition consolidated via CIP are an effective method to improve the mechanical properties of Y-TZP.

AB - Fabrication and composition of tetragonal zirconia have been extensively studied to enhance its mechanical properties. The present study aims to investigate the mechanical properties of yttrium-stabilized zirconia (Y-TZP) with ceria addition consolidated via cold isostatic pressing (CIP). 3Y-TZP was prepared by slip casting. Another batch of samples was fabricated via slip casting with the addition of 5 wt% of ceria, followed by CIP. All samples were sintered at 1600 °C. Results showed that the density and hardness of Y-TZP increased with the addition of ceria and use of CIP. The density increased from 91.8% to 98% of theoretical density, and the hardness increased from 10.33 GPa to 14.14 GPa. Field-emission scanning electron microscopy (FESEM) images showed that Y-TZP with ceria and consolidated via CIP had more homogenous grain structure with lower porosity. The X-ray diffraction (XRD) analysis showed that the phase was 100% tetragonal for both materials. Ceria addition consolidated via CIP are an effective method to improve the mechanical properties of Y-TZP.

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