Cerium Hexaboride (CeB6) Ceramics
Cerium Boride, also called Cerium Hexaboride or CeB6, is a refractory ceramic material. It has a low work function and one of the highest electron emissivity known, and is stable in a vacuum. Therefore, the principal use of cerium hexaboride is a coating of hot cathodes, or hot cathodes made of cerium hexaboride crystals. Cerium boride cathode usually operates at a temperature of 1450 °C because it shows a lower evaporation rate at 1427℃ than lanthanum boride, but it becomes equal at 1577℃ and higher above that.
Cerium Hexaboride Properties:
Compound Formula | CeB6 |
Molecular Weight | 204.98 |
Appearance | Blue |
Melting Point | 2550 °C |
Modulus of Elasticity | 379 GPa |
Density | 4.80-4.87 g/cm3 |
Thermal Conductivity | 33.0 – 34.8 W/m-K |