Description of Cerium Hexaboride Cathodes
Cerium hexaboride ceramic components are typically manufactured by sintering. In this process, the powdered cerium hexaboride is compacted and heated to form a dense, rigid ceramic structure. This component is designed for technical applications that require high electron emission, and it produces dependable electron beams. Cerium hexaboride ceramic is noted for its high brightness, which increases the electron beam intensity. High brightness is essential for improved resolution in electron microscopy.
Specifications of Cerium Hexaboride Cathodes
Stoichiometry
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~6
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Density (g/cm3)
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4.80
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Electrical resistivity
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~65uΩ-cm
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Effective work function at 1800K
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2.65eV
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Spectral emissivity at 0.65 microns
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0.779
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Orientation limit for specific alignment
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<2°
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SMVM clamping pressure
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34.5MPa
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Yield of finished cathodes
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>85%
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Forms:
Standard:

Cylindrical hats:

Applications of Cerium Hexaboride Cathodes
As cathodes for SEM and TEM
Electron beam lithography devices
Scanning Auger spectrograph and other micro-electron beam applications
Packaging of Cerium Hexaboride Ceramic Components
Our Cerium hexaboride ceramic components are handled with care to prevent damage during storage and transport. This practice maintains the quality of the products in their original state.
Frequently Asked Questions about Cerium Hexaboride Ceramic Components
Q1: What is the purpose of using Cerium hexaboride (CeB6) in cathodes?
Cerium hexaboride is used as a thermionic electron emitter owing to its low work function and high electron emission efficiency. It is employed in electron microscopy, electron beam welding, and other vacuum applications.
Q2: What benefits does the use of Cerium hexaboride cathodes offer?
Cerium hexaboride cathodes provide measurable electron emission performance, including a low work function, high current density, and stable operation at elevated temperatures and under vacuum conditions. They are resistant to contaminants.
Q3: What are the operating conditions for Cerium hexaboride cathodes?
Cerium hexaboride cathodes operate in high-vacuum environments. They generally function at temperatures between 1000°C and 2000°C. A clean and stable vacuum is required to achieve optimal performance.