Fracture Model of ZrO2-Al2O3 Ceramic Composite

Xiao Li Tian; Chong Bo Xue

doi:10.4028/www.scientific.net/KEM.723.89

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 723Fracture Model of ZrO2-Al2O3 Ceramic Composite

Fracture Model of ZrO₂-Al₂O₃Ceramic Composite

Abstract:

Mixtures of ZrO₂-Al₂O₃ ceramic composite were prepared using zirconia powder, ZrO₂-Al₂O₃ composite powder synthesized by sol-gel process as main starting materials and zirconia gel as a binder. Then the mixtures were pressed into the mold, and then sintered at 1650°C for 3h. Finally, the ZrO₂-Al₂O₃ ceramic composite samples were prepared. Then the mineral phases of ZrO₂-Al₂O₃ceramic composite were analyzed by X-ray diffraction (XRD), and the fracture model of ZrO₂-Al₂O₃ ceramic composite was analyzed by press, scanning electron microscopy (SEM) and energy dispersive X-ray Spectroscope (EDS). The results show that, zirconia is the main phase and alumina is the secondary phase mainly present in the matrix. The fracture model of ZrO₂-Al₂O₃ material was jointly composed by intergranular fracture and transgranular fracture, of which the coarse particle shows the intergranular fracture model and the fine particle shows the transgranular fracture model.

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Proceedings of International Conference on Material Science and Engineering 2016

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Key Engineering Materials (Volume 723)

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89-93

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.723.89

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Online since:

December 2016

Authors:

Xiao Li Tian*, Chong Bo Xue

Keywords:

Crack Growth, Intergranular Fracture, Transgranular Fracture, ZrO₂-Al₂O₃ Composite

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