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CE1848 Cerium Hexaboride Cathode, CeB6 Cathode

  • Catalog No. CE1848
  • Molecular Formula CeB6
  • Molecular Weight 204.98
  • Appearance Purple
  • Melting Point 2552°C
  • Density 4.80-4.87 g/cm3
  • Solubility in Water Insoluble
  • Crystal Structure Cubic
sc/1678091601-normal-Cerium-Boride-Cathode.jpg

Cerium Hexaboride Cathode Description

Cerium 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 a 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

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
?Ω-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 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
-Radiotherapy devices

Packing Service

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

Related Documents
Cerium Boride SDS
SAFETY DATA SHEET of Cerium Boride
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