CG MATERIAL
Cerium Hexaboride Powder, CeB6 Powder
Cerium Hexaboride Powder, CeB6 Powder
Cerium hexaboride (CeB6) powder is a ceramic material that is widely used in electronics, metallurgy, and nuclear industries due to its unique properties. It is a refractory material with a high melting point and high hardness, making it resistant to wear and corrosion. CeB6 powder is also a good electrical conductor and has a low work function, making it useful as a cathode material in electron guns and other vacuum devices. Additionally, it has a high neutron absorption cross-section, which makes it useful in nuclear reactor applications. The powder is typically produced by carbothermal reduction of a mixture of cerium oxide and boron oxide at high temperatures. It is available in a range of particle sizes and purities for various applications.
Cerium Hexaboride Description
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 |
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
-Radio therapy devices
Material Data for LaB6 and CeB6
|
Parameter
|
Units | LaB6 | CeB6 |
|---|---|---|---|
| Stoichiometry |
N/A
|
~6
|
|
| Metal Impurities |
ppm by wt.
|
＜30
|
|
| Density |
g/cm3
|
4.72
|
4.80
|
| Coefficient of Thermal Expansion |
α x 106
|
5.6
|
6.2
|
| Electrical Resistivity |
µΩ-cm
|
~50
|
~65
|
| Effective Work Function (100) at 1800 K |
eV
|
2.70
|
2.65
|
| Spectral Emissivity at 0.65 microns |
N/A
|
0.765
|
0.779
|
| Evaporation rate at 1800 K (UHV) |
g/cm2/s
|
2.2 x 10-9
|
1.6 x 10-9
|
| Orientation limit for specific orientation |
degrees
|
＜2
|
|
| Pyrolytic block mount resistance @ 1800 K |
Ohms
|
1.45
|
|
Cerium Hexaboride Cathode 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
-Radio therapy devices
Material Data for LaB6 and CeB6
|
Parameter
|
Units | LaB6 | CeB6 |
|---|---|---|---|
| Stoichiometry |
N/A
|
~6
|
|
| Metal Impurities |
ppm by wt.
|
＜30
|
|
| Density |
g/cm3
|
4.72
|
4.80
|
| Coefficient of Thermal Expansion |
α x 106
|
5.6
|
6.2
|
| Electrical Resistivity |
µΩ-cm
|
~50
|
~65
|
| Effective Work Function (100) at 1800 K |
eV
|
2.70
|
2.65
|
| Spectral Emissivity at 0.65 microns |
N/A
|
0.765
|
0.779
|
| Evaporation rate at 1800 K (UHV) |
g/cm2/s
|
2.2 x 10-9
|
1.6 x 10-9
|
| Orientation limit for specific orientation |
degrees
|
＜2
|
|
| Pyrolitic block mount resistance @ 1800 K |
Ohms
|
1.45
|
|
Cerium Hexaboride Powder 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
-Radio therapy devices
Packaging
We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.
