Development of electrically conductive zirconia Part1: The optimal process parameters and mechanical properties

Shi Yung Chiou, Cui Feng Wang, Shih Fu Ou, Keng Liang Ou, Zhang Ting Tsai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The Taguchi method was applied to analyze the optimum process parameters of a 3 mol% yttria-tetragonal zirconia polycrystal (3Y-TZP) containing 30 wt% titanium nitride (TiN) (3Y-TZP/TiN). Four process parameters - (1) sintering type, (2) crushing time of TiN powder, (3) the first-step sintering duration, and (4) the second-step sintering temperature were chosen as the controlling factors. Fracture toughness, flexural strength, hardness, relative density, and electric resistance were examined using an L9 orthogonal array. The results indicated that the fracture toughness was mainly affected by the duration of the first sintering step. The highest fracture toughness (9.275 MPa m1/2) was achieved at 97.3 vol% of the tetragonal phase in 3Y-TZP/TiN. In addition, 3Y-TZP/TiN possessing a high fracture toughness of 8.59 MPa m1/2 and a flexural strength of 680.77 MPa was fabricated using the optimum process parameters, 8 h crushing time of TiN powder, and the two-step sintering process. The electric resistance for 3Y-TZP/TiN was 3.26×10-3 μm cm.

Original languageEnglish
Pages (from-to)5705-5712
Number of pages8
JournalCeramics International
Volume39
Issue number5
DOIs
Publication statusPublished - Jul 2013

Fingerprint

Titanium nitride
Zirconia
Yttrium oxide
Polycrystals
Mechanical properties
Sintering
Fracture toughness
Crushing
Bending strength
Powders
Taguchi methods
zirconium oxide
titanium nitride
Hardness
yttria

Keywords

  • Electrically conductive zirconia
  • Fracture toughness
  • Taguchi method

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Development of electrically conductive zirconia Part1 : The optimal process parameters and mechanical properties. / Chiou, Shi Yung; Wang, Cui Feng; Ou, Shih Fu; Ou, Keng Liang; Tsai, Zhang Ting.

In: Ceramics International, Vol. 39, No. 5, 07.2013, p. 5705-5712.

Research output: Contribution to journalArticle

Chiou, Shi Yung ; Wang, Cui Feng ; Ou, Shih Fu ; Ou, Keng Liang ; Tsai, Zhang Ting. / Development of electrically conductive zirconia Part1 : The optimal process parameters and mechanical properties. In: Ceramics International. 2013 ; Vol. 39, No. 5. pp. 5705-5712.
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