CE1850 Cerium Hexaboride Ceramic Parts, CeB6 Parts

Cerium Hexaboride Ceramic Parts Properties

Catalog No.	CE1850
Density	4.8g/cm3
Melting Point	2552℃
Molecular Formula	CeB6
Crystal Structure	Cubic

Cerium Hexaboride Ceramic Parts Description

Cerium Boride, also called Cerium Hexaboride or CeB6, is a refractory ceramic Cerium Hexaboride (CeB6) Ceramic Part 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.

CeB6 Ceramic Parts Chemical Composition

CeB6 (% min.)
99.9 %
B (% min.)
31 %
Rare Earth Impurities		Non-RE Impurities
La		Fe
Pr		Si
Nd		Ca
Sm		C
Y		Mg
		Ti

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

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	uΩ-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 a specific orientation	degrees	<2>
Pyrolitic block mount resistance @ 1800 K	Ohms	1.45

Packing Service

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