Changes in Microstructures and Properties of Al2O3/ZrO2 (Y2O3) with Different Content of ZrO2

Abstract:

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Based on preparation of Al2O3/ZrO2 (4Y) by combustion synthesis in high-gravity field, the microstructure transformation and properties of the materials are investigated through adjusting the ZrO2 (4Y) content in the composites. As the content of ZrO2 changed from 37% to 40%, the microstructures of the ceramics transformed the sphere-like tetragonal ZrO2 crystals from the rod-shaped colonies with nanocrystalline structures. Al2O3/33%ZrO2 (4Y) had the maximum relative density, hardness and flexural strength due to the low solidification temperature, the highest volume fraction of the colonies, small-size defect and high fracture toughness, whereas Al2O3/44%ZrO2 (4Y) was somewhat weakened in strength in despite of its highest fracture toughness.

Info:

Periodical:

Advanced Materials Research (Volumes 105-106)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1-4

DOI:

10.4028/www.scientific.net/AMR.105-106.1

Citation:

C. Z. Pan et al., "Changes in Microstructures and Properties of Al2O3/ZrO2 (Y2O3) with Different Content of ZrO2", Advanced Materials Research, Vols. 105-106, pp. 1-4, 2010

Online since:

April 2010

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Price:

$35.00

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