Large Bulk Al2O3/ZrO2 (Y2O3) Nanocrystalline Composites Prepared by Combustion Synthesis under High Gravity

Zhong Min Zhao; Long Zhang; Chuan Zeng Pan; Quan Yang; Zhen Sheng Qu; Guan Ling Su; Xue Gang Huang; Min Quan Wang

doi:10.4028/www.scientific.net/KEM.434-435.9

Paper Titles

Preface and Sponsors

Current Status of Oxide Fibre-Reinforced Oxide Ceramic Matrix Composites for Gas Turbine Applications
p.1

Fabrication of Textured β-Si₃N₄ and β-Sialon by Slip Casting in a Strong Magnetic Field and Reaction-Sintering
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Large Bulk Al₂O₃/ZrO₂ (Y₂O₃) Nanocrystalline Composites Prepared by Combustion Synthesis under High Gravity
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Ultra-High-Hard Composites of TiC-TiB₂ Prepared by Combustion Synthesis under High Gravity
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A Study on the Porous Microstructure of Yakbone Bioceramic
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Effect of Microstructure on Removal Mechanism of Solid State Sintered Silicon Carbide in Polishing Procedure
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Densification and Mechanical Properties of B₄C Based Composites Sintered by Reaction Hot-Pressing
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Mechanical and Tribological Properties of 3D Carbon Fiber Reinforced SiC Composites Prepared by Liquid Silicon Infiltration
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 434-435Large Bulk Al2O3/ZrO2 (Y2O3) Nanocrystalline...

Large Bulk Al₂O₃/ZrO₂ (Y₂O₃) Nanocrystalline Composites Prepared by Combustion Synthesis under High Gravity

Abstract:

The large bulk Al2O3/ZrO2 (Y2O3) eutectics were achieved by combustion synthesis in high-gravity field. With increasing high-gravity level, the matrix of eutectics transformed the rod-shaped colonies from the cellular ones, and the nanocrystalline microstructures came into existence as the high-gravity level was larger than 200g. The relative density, hardness, flexural strength and fracture toughness increased simultaneously with increasing high-gravity level, and reached the maximum values of 98.6%, 18.6GPa, 1248MPa and 15.6MPa•m1/2 respectively as the high-gravity level was 250g.