Nano cerium oxide CeO2 additives can improve the microstructure of alumina-based ceramics, which is conducive to the densification of materials, and improves mechanical properties and thermal shock resistance. But different content of nano-cerium oxide CeO2 has different effects on its performance.

1. Nano cerium oxide CeO2 additive can obviously promote the sintering of alumina-based ceramics, improve the microstructure of alumina-based ceramics, and help the densification of materials, improving mechanical properties and thermal shock resistance.

2. When the content of nano cerium oxide CeO2 is 1.5wt%, the relative density of alumina-based ceramics is the highest, and the bending strength and fracture toughness are the highest. Its values are 96.96%, 220.91MPa and 4.18MPa.m1/2 respectively. When the content of nano-cerium oxide CeO2 is 1wt%, the thermal shock resistance of alumina-based ceramics is better.

3. The thermal shock resistance of alumina-based ceramics added with nano-cerium oxide CeO2 is controlled by the toughening effect and pores. The main contribution to the improvement of thermal shock resistance is the toughening effect, but the pores will also affect its thermal shock resistance. .

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