Influence of Titanium Sol on the Sintering Behaviour, Microstructure and Properties of Al2O3-SiO2 Ceramic Cores

Jun Chen; Yue Zhang

doi:10.4028/www.scientific.net/MSF.745-746.507

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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Influence of Titanium Sol on the Sintering...

Influence of Titanium Sol on the Sintering Behaviour, Microstructure and Properties of Al₂O₃-SiO₂ Ceramic Cores

Abstract:

A series of Al₂O₃-SiO₂ ceramic cores with titanium sol sintered at 1350, 1450, 1500 and 1550for 2h, respectively, were prepared, and the phase and microstructure were characterized by X-ray Diffraction and Scanning Electron Microscopy. The influence of titanium sol on the phase transformation, shrinkage rate and flexural strength at room temperature has been investigated. The mullite phase formation temperature decreased by at least 150with the addition of 1wt% to 5wt% TiO₂. Additionally, the titania additive promoted the combination of Al₂O₃ and SiO₂, producing mullite phase which reduced the shrinkage and improved the flexural strength.

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Periodical:

Materials Science Forum (Volumes 745-746)

Pages:

507-511

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.507

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Online since:

February 2013

Authors:

Jun Chen, Yue Zhang

Keywords:

Al₂O₃-SiO₂, Ceramic Core, Flexural Strength, Phase Transformation, Shrinkage, Titanium Sol

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