Al2O3-ZrO2 composites prepared by gelcasting

Baoxiang Jiao; Chuncheng Li; Tai Qiu; Chunying Shen

Al₂O₃-ZrO₂ composites prepared by gelcasting

Baoxiang Jiao, Chuncheng Li, Tai Qiu, Chunying Shen

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The effects of pH value, the amount of dispersant, ZrO₂(3Y) content and solid volume fraction on viscosity of ZTA ceramic slurries were discussed. The mechanical properties and microstructure of sintered ZTA samples by gelcasting were investigated. The results show that low viscosity ZTA (20% ZrO₂) suspension with 55% solid volume fraction is obtained at pH 8.5 and 0.9% dispersant. The sintered sample prepared with high solid volume fraction of the suspension has the advantages of compact structure, uniformity distribution of ZrO₂ particles and higher content of t-ZrO₂ phase. Its bending strength and fracture toughness are 631.5 MPa and 7.64 MPa·m^1/2 under the test condition, respectively.

Original language	English
Pages (from-to)	125-129
Number of pages	5
Journal	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume	21
Issue number	6
State	Published - Dec 2004

Keywords

Composite ceramic
Gelcasting
Mechanical performance
Microstructure
Viscosity

Cite this

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title = "Al2O3-ZrO2 composites prepared by gelcasting",

abstract = "The effects of pH value, the amount of dispersant, ZrO2(3Y) content and solid volume fraction on viscosity of ZTA ceramic slurries were discussed. The mechanical properties and microstructure of sintered ZTA samples by gelcasting were investigated. The results show that low viscosity ZTA (20% ZrO2) suspension with 55% solid volume fraction is obtained at pH 8.5 and 0.9% dispersant. The sintered sample prepared with high solid volume fraction of the suspension has the advantages of compact structure, uniformity distribution of ZrO2 particles and higher content of t-ZrO2 phase. Its bending strength and fracture toughness are 631.5 MPa and 7.64 MPa·m1/2 under the test condition, respectively.",

keywords = "Composite ceramic, Gelcasting, Mechanical performance, Microstructure, Viscosity",

author = "Baoxiang Jiao and Chuncheng Li and Tai Qiu and Chunying Shen",

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TY - JOUR

T1 - Al2O3-ZrO2 composites prepared by gelcasting

AU - Jiao, Baoxiang

AU - Li, Chuncheng

AU - Qiu, Tai

AU - Shen, Chunying

PY - 2004/12

Y1 - 2004/12

N2 - The effects of pH value, the amount of dispersant, ZrO2(3Y) content and solid volume fraction on viscosity of ZTA ceramic slurries were discussed. The mechanical properties and microstructure of sintered ZTA samples by gelcasting were investigated. The results show that low viscosity ZTA (20% ZrO2) suspension with 55% solid volume fraction is obtained at pH 8.5 and 0.9% dispersant. The sintered sample prepared with high solid volume fraction of the suspension has the advantages of compact structure, uniformity distribution of ZrO2 particles and higher content of t-ZrO2 phase. Its bending strength and fracture toughness are 631.5 MPa and 7.64 MPa·m1/2 under the test condition, respectively.

AB - The effects of pH value, the amount of dispersant, ZrO2(3Y) content and solid volume fraction on viscosity of ZTA ceramic slurries were discussed. The mechanical properties and microstructure of sintered ZTA samples by gelcasting were investigated. The results show that low viscosity ZTA (20% ZrO2) suspension with 55% solid volume fraction is obtained at pH 8.5 and 0.9% dispersant. The sintered sample prepared with high solid volume fraction of the suspension has the advantages of compact structure, uniformity distribution of ZrO2 particles and higher content of t-ZrO2 phase. Its bending strength and fracture toughness are 631.5 MPa and 7.64 MPa·m1/2 under the test condition, respectively.

KW - Composite ceramic

KW - Gelcasting

KW - Mechanical performance

KW - Microstructure

KW - Viscosity

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M3 - 文章

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SN - 1000-3851

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JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 6

ER -

Al₂O₃-ZrO₂ composites prepared by gelcasting

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Keywords

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