Cerium Hexaboride Ceramic Component Description
Cerium hexaboride is a ceramic material commonly used in electron microscopes. It exhibits a low work function, which renders it a recognised cathode material for electron emissions, and it remains very stable in a vacuum. CeB6 displays an evaporation rate at standard operating temperatures near 1 800 K, which is lower than that of LaB6.
Cerium boride, or cerium hexaboride, is generally available in large quantities. Borides are characterised by high melting points and metallic electrical conductivity. They remain stable when exposed to non-oxidising acids, but decompose in the presence of strong oxidising agents and strong bases.
Applications of Cerium Hexaboride Ceramic Components
Used for coating certain high-current hot cathodes
Electron microscopes such as SEM, TEM
X-ray tubes
Electron lithography
Electron beam welding
Specifications of Cerium Hexaboride Ceramic Components
Other Names
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Ceriumborid, Cebix
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Chemical Formula
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CeB6
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EC Number
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234-526-9
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Molar Mass
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204.986 g/mol
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Density
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4.8 g/cm³
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Water Solubility
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Insoluble
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Crystal Structure
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Cubic
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Space Group
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Pm3m; Oh
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Chemical Composition
CeB6 (% min.)
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99.9 %
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B (% min.)
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31 %
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Rare Earth Impurities
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Non-RE Impurities
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La
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<120 ppm
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Fe
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<250 ppm
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Pr
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<150 ppm
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Si
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<100 ppm
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Nd
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<180 ppm
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Ca
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<90 ppm
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Sm
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<112 ppm
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C
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<300 ppm
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Y
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<250 ppm
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Mg
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<100 ppm
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Ti
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<100 ppm
|
|
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