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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:
- Low work function
- High electron emissivities
- Stable in vacuum
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 |
Cerium Hexaboride Applications
- Thermionic emission (cathode)
- Plasma source for plasma-enhanced coating(PECVD)
- Vacuum electron beam welding machine
- Electron beam surface reforming device
- Electron beam lithography device
- Transmission electron microscope
- Scanning electron microscope
- Surface analysis device
- Radiotherapy devices
ACM Ceramic Product Categories
Your Cerium Hexaboride Ceramics Supplier
Advanced Ceramic Materials (ACM) is a leading supplier of cerium boride ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us with any questions about CeB6 or other ceramic materials that are not listed on the website.
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FAQs
Q: What Is Cerium Boride?
Q: What Are the Properties of CeB6?
Q: What Is CeB6 Used For?
Q: What Is the Working Temperature of CeB6 Cathode?
Properties
| Chemical Formula | CeB6 |
| Mechanical | |
| Density | 4.80-4.87 g/cm3 |
| Hardness | 25-30 GPa |
| Modulus of Elasticity | 379 GPa |
| Flexural Strength | 350 MPa |
| Compressive Strength | 2000 MPa |
| Poisson's Ratio | 0.12 |
| Fracture Toughness | 3.5-4.5 MPa m½ |
| Electrical | |
| Dielectric Strength | - |
| Dielectric Constant | - |
| Volume Resistivity | 10^-6 to 10^-5 |
| Thermal | |
| Coefficient of Thermal Expansion | 6.5 x 10^-6/°C |
| Thermal Conductivity | 33.0 - 34.8 W/m*K |
| Specific Heat | 0.5 J/g·K |
| Shock Resistance | - |
| Maximum Working Temperature | 1800 ℃ |
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