Rheological characterization and shape control in gel-casting of nano-sized zirconia powders

Gang Liu; Moataz M. Attallah; Yun Jiang; Timothy Button

doi:10.1016/j.ceramint.2014.06.036

Rheological characterization and shape control in gel-casting of nano-sized zirconia powders

Gang Liu, Moataz M. Attallah, Yun Jiang^*, Timothy Button

^*Corresponding author for this work

Metallurgy and Materials

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

10 Citations (Scopus)

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Abstract

In this study, a water soluble resin based gel system was developed incorporating nano-sized zirconia powders. The effects of the resin content and the solid loading on the rheological properties, density, mechanical properties and shape control have been investigated. All the slurries show typical shear-thinning behaviour. Higher resin-content leads to higher viscosity and larger green density. The density of the green component obtained from a slurry with 30 wt% resin can reach 2.85 g/cm³ (nearly 50% of the theoretical density). However, when the resin content is beyond 25 wt%, the sintered density decreased. Higher density, solid-loading and applying external force are helpful to improve the shape control.

Original language	English
Pages (from-to)	14405-14412
Number of pages	8
Journal	Ceramics International
Volume	40
Issue number	9 PART A
Early online date	14 Jun 2014
DOIs	https://doi.org/10.1016/j.ceramint.2014.06.036
Publication status	Published - 1 Nov 2014

Keywords

Gel-casting
Nano-sized zirconia
Rheological property
Shape control

ASJC Scopus subject areas

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

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10.1016/j.ceramint.2014.06.036

Liu_Rheological_characterization_Ceramics_International_2014
NOTICE: this is the author’s version of a work that was accepted for publication in Ceramics International. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ceramics International [VOL 40, ISSUE 9, November 2014] DOI: 10.1016/j.ceramint.2014.06.036 Eligibility for repository checked October 2014
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title = "Rheological characterization and shape control in gel-casting of nano-sized zirconia powders",

abstract = "In this study, a water soluble resin based gel system was developed incorporating nano-sized zirconia powders. The effects of the resin content and the solid loading on the rheological properties, density, mechanical properties and shape control have been investigated. All the slurries show typical shear-thinning behaviour. Higher resin-content leads to higher viscosity and larger green density. The density of the green component obtained from a slurry with 30 wt% resin can reach 2.85 g/cm3 (nearly 50% of the theoretical density). However, when the resin content is beyond 25 wt%, the sintered density decreased. Higher density, solid-loading and applying external force are helpful to improve the shape control.",

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AU - Liu, Gang

AU - Attallah, Moataz M.

AU - Jiang, Yun

AU - Button, Timothy

PY - 2014/11/1

Y1 - 2014/11/1

N2 - In this study, a water soluble resin based gel system was developed incorporating nano-sized zirconia powders. The effects of the resin content and the solid loading on the rheological properties, density, mechanical properties and shape control have been investigated. All the slurries show typical shear-thinning behaviour. Higher resin-content leads to higher viscosity and larger green density. The density of the green component obtained from a slurry with 30 wt% resin can reach 2.85 g/cm3 (nearly 50% of the theoretical density). However, when the resin content is beyond 25 wt%, the sintered density decreased. Higher density, solid-loading and applying external force are helpful to improve the shape control.

AB - In this study, a water soluble resin based gel system was developed incorporating nano-sized zirconia powders. The effects of the resin content and the solid loading on the rheological properties, density, mechanical properties and shape control have been investigated. All the slurries show typical shear-thinning behaviour. Higher resin-content leads to higher viscosity and larger green density. The density of the green component obtained from a slurry with 30 wt% resin can reach 2.85 g/cm3 (nearly 50% of the theoretical density). However, when the resin content is beyond 25 wt%, the sintered density decreased. Higher density, solid-loading and applying external force are helpful to improve the shape control.

KW - Gel-casting

KW - Nano-sized zirconia

KW - Rheological property

KW - Shape control

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JO - Ceramics International

JF - Ceramics International

IS - 9 PART A

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Rheological characterization and shape control in gel-casting of nano-sized zirconia powders

Abstract

Keywords

ASJC Scopus subject areas

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