99.99% Ceramic toughened nano-alumina

1. Due to the superplasticity of nano-alumina powder, it solves the shortcomings of the application range limited by low-temperature brittleness. Among them, nano-aluminum oxy-carbide (SiC) nanocomposites are the most prominent, and their flexural strength is from The single-phase alumina ceramics increased from 300-400 MPa to 1 GPa, and the fracture toughness of the material increased by more than 40%.

2. Thermal stability: The addition of nano-alumina to the ceramic substrate not only improves the sintering performance of the substrate, but also greatly improves the thermal stability of the alumina substrate material, and the thermal stability is improved by 2-3 times.

3. Density: In the process of powder extrusion molding, nano-α-Al2O3 powder can be filled into the pores of micron alumina powder, which reduces the pore size; the molding pressure is increased, and the number of pores can be reduced, thereby improving The density of ceramic embryos improves the density and mechanical properties of alumina ceramics after sintering.

4. Reduction of sintering temperature: the addition of nano-a-Al2O3 promotes the sintering activity and helps to reduce the sintering temperature. When the sintering temperature is 1450 °C, the flexural strength and fracture toughness reach the maximum.

5. The addition of a small amount of nano-a-Al2O3 can effectively improve the mechanical properties of the material. The alumina ceramic is sintered at 1450 °C. When the addition amount is 10%, the flexural strength is 415 mPa and the fracture toughness is 4.1 MPa·m^1. /2.