CG MATERIAL
Cerium Hexaboride Ceramic Parts, CeB6 Parts
Cerium Hexaboride Ceramic Parts, CeB6 Parts
Cerium hexaboride (CeB6) ceramic parts are components made from the hard and refractory material cerium hexaboride. CeB6 ceramic parts have high thermal conductivity, high melting point, low work function, and good chemical stability, making them suitable for use in high-temperature and high-vacuum applications.
CeB6 ceramic parts can be fabricated into various shapes and sizes, such as plates, rods, tubes, and custom machined components. They can be used in applications such as electron emitters, thermionic cathodes, and other electronic devices. Additionally, CeB6 parts can be used in various industrial applications, such as furnace linings and coatings, due to their high-temperature resistance and chemical stability.
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
|
|
CeB6 Ceramic Parts Chemical Composition
|
CeB6 (% min.) |
|||
|
99.9 % |
|||
|
B (% min.) |
|||
|
31 % |
|||
|
Rare Earth Impurities |
Non-RE Impurities |
||
|
La |
＜120 ppm |
Fe |
＜250 ppm |
|
Pr |
＜150 ppm |
Si |
＜100 ppm |
|
Nd |
＜180 ppm |
Ca |
＜90 ppm |
|
Sm |
＜112 ppm |
C |
＜300 ppm |
|
Y |
＜250 ppm |
Mg |
＜100 ppm |
|
|
Ti |
＜100 ppm | |
Cerium Hexaboride Ceramic Parts Applications
-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.
