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CE1858 Cerium Hexaboride (CeB6) Rod

Cerium Hexaboride Rod Properties

Catalog No. CE1858
Size Min. Dia.: 0.2” Max. L: 12”
Density 4.80-4.87 g/cm3
Appearance Purple
Melting Point 2552°C

 

Cerium Hexaboride Rod Description

Cerium Hexaboride RodCerium Boride, also called Cerium Hexaboride or CeB6, is a refractory ceramic material. The principal use of cerium hexaboride is a coating of hot cathodes, or hot cathodes made of cerium hexaboride crystals. It usually operates at temperature of 1450 °C.

Cerium hexaboride, like lanthanum hexaboride, slowly evaporates during the cathode operation. In conditions where CeB6 cathodes are operated under 1850 K, CeB6 should maintain its optimum shape longer and therefore last longer. While the process is about 30% slower than with lanthanum boride, the cerium boride deposits are reported to be more difficult to remove.

Cerium Hexaboride Rod 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

  

Packing Service

ACM’s Cerium Hexaboride Rod is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

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