Ceria ceramics refers to ceramics containing cerium oxide as a main component.
Properties: The product has a specific gravity of 7.73 and a melting point of 2600 ° C. It will become Ce 2 O 3 under a reducing atmosphere, and the melting point is lowered from 2600 ° C to 1690 ° C. The resistivity at 700 ° C is 2 × 10 Ω·cm, and at 1200 ° C is 20 Ω·cm. At present, the technical techniques commonly used in the industrial production of antimony oxide in China are as follows:
1) chemical oxidation method, including air oxidation method and potassium permanganate oxidation method;
2) calcination oxidation method;
3) Extraction separation method.
application:
1) å©åŸš, thermowell, etc., which can be used as heating elements, smelting metals and semiconductors;
2) It can be used as a sintering aid for silicon nitride ceramics, and can also modify aluminum titanate composite ceramics, and CeO2 is an ideal toughening stabilizer;
3) The rare earth trichromatic phosphor added with 99.99% CeO2 is a luminescent material for making energy-saving lamps, which has high light efficiency, good color development and long service life;
4) The sorghum polishing powder made of CeO2 with a mass fraction of more than 99% has high hardness, small and uniform particle size, and the crystal has an angular shape, which is suitable for high-speed polishing of glass;
5) Using 98% CeO2 as a glass decolorizer and clarifier, can improve the quality and performance of the glass, making the glass more practical;
6) Cerium oxide ceramics have poor thermal stability and strong sensitivity to the atmosphere, thus limiting its use to some extent.
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