Improvement in the Thermal Shock Resistance of Zirconia Ceramic by the Addition of Aluminium Titanate

Heng Yong Wei; Li Xue Yu; Zhi Fa Wang; Jing Long Bu; Shu Long Ma; Yu Wang

doi:10.4028/www.scientific.net/AMR.194-196.1724

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 194-196Improvement in the Thermal Shock Resistance of...

Improvement in the Thermal Shock Resistance of Zirconia Ceramic by the Addition of Aluminium Titanate

Abstract:

ZrO₂-Al₂TiO₅ composite materials with high bending strength and good thermal shock resistance expansion were prepared using partially stabilized zirconia (Y-PSZ) powders coated with Al₂TiO₅ by co-precipitation method. The effects of Al₂TiO₅ content on the sintering properties, phase composition, microstructure and thermal shock resistance of the zirconia ceramic were investigated．The results show that the apparent porosity of the samples decreased and their bending strength increased with the content of aluminum titanate increasing from 0 to 8 wt%. The samples with 5 and 8 wt% aluminum titanate addtion have excellent thermal shock resistance. The results showed that the addtion of aluminum titanate could enhance the mechanical strength and improve the thermal shock resistance of zirconia ceramic. The XRD and SEM analysis results indicated that the propriety improvement is relative with the change of the microstructure and the increase of tetragonal ZrO₂ phase in the composites.

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Periodical:

Advanced Materials Research (Volumes 194-196)

Pages:

1724-1727

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.194-196.1724

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Online since:

February 2011

Authors:

Heng Yong Wei, Li Xue Yu, Zhi Fa Wang, Jing Long Bu, Shu Long Ma, Yu Wang

Keywords:

Mechanical Strength, Thermal Shock Resistance, ZrO₂-Al₂TiO₅ Composite

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