Cerium Hexaboride Sheet Description
Cerium Hexaboride Sheet is a component crafted from cerium hexaboride (CeB6), celebrated for its distinctive properties, especially its capacity to emit electrons through thermionic emission when exposed to heat. Engineered to deliver dependable and efficient electron beams, the Cerium Hexaboride Disc finds its niche in cutting-edge technological applications that require top-tier electron emission performance. Revered for its thermionic attributes, stability, and adeptness in achieving high brightness, CeB6 disc significantly enhances electron microscopy resolution.
Cerium Hexaboride Sheet Specification
|
Parameter
|
Units
|
CeB6
|
|
Stoichiometry
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N/A
|
~6
|
|
Metal Impurities
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Ppm by wt.
|
<30
|
|
Density
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g/cm3
|
4.80
|
|
Coefficient of Thermal Expansion
|
α*106
|
6.2
|
|
Electrical Resistivity
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μΩ-cm
|
~65
|
|
Effective Work Function(100) at 1800K
|
eV
|
2.65
|
|
Spectral Emissivity at 0.65 Microns
|
N/A
|
0.779
|
|
Evaporation Rate at 1800K(UHV)
|
g
|
1.6×10-9
|
|
Orientation Limit for a Specific Orientation
|
Degrees
|
<2
|
|
Pyrolitic Block Mount Resistance at 1800K
|
Ohms
|
1.45
|
Prototyping service also available for other ceramics material
Alumina
Aluminum Nitride
Boron Nitride
Silicon Carbide
Silicon Nitride
Zirconia
Cerium Hexaboride Sheet Applications
1. Thermionic Emitters in Large-Area Devices: CeB6 sheets can be used as thermionic emitters in large-area devices where a uniform electron emission is required across a broad surface. This is particularly useful in devices such as electron beam lithography systems and large-scale electron microscopes.
2. X-ray Generation: In some advanced X-ray systems, CeB6 sheets can be used as cathode materials for generating X-rays, especially in applications that require a larger emission area or uniformity across the surface.
3. High-Temperature Coatings: CeB6 sheets can serve as high-temperature coatings or liners in furnaces and other high-temperature environments, where their stability and resistance to oxidation protect underlying materials from thermal degradation.
4. Vacuum Electronics and Plasma Devices: In vacuum electronics and plasma generation devices, CeB6 sheets can be used as electron sources, particularly in systems that require large, flat-emitting surfaces, such as certain types of plasma displays or large-area field emission devices.
5. Ion Thrusters: While more commonly associated with rods or discs, CeB6 sheets can be utilized in ion thruster designs where a larger surface area is needed for uniform electron emission to help generate and sustain the plasma.
6. Research and Development: CeB6 sheets are used in research and development for studying high-temperature materials, thermionic emission properties, and surface science, providing a flat, uniform surface for controlled experiments.
7. Field Emission Displays (FEDs): In field emission displays, CeB6 sheets can be used as electron-emitting cathodes, offering a uniform and stable electron source across a large display area.
8. Surface Engineering: CeB6 sheets may be employed in surface engineering applications where their high temperature and oxidation resistance are beneficial, potentially as part of composite materials or as a substrate for other high-performance coatings.
Cerium Hexaboride Sheet Packing
Cerium Hexaboride Sheet is tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.
Cerium Hexaboride Sheet FAQs
Q1: What is a Cerium Hexaboride Sheet?
Answer: A Cerium Hexaboride (CeB₆) sheet is a flat, thin piece made from cerium hexaboride, a material known for its exceptional electron emission properties, high melting point, and chemical stability. These sheets are used in various high-tech and industrial applications.
Q2: What are the common applications of Cerium Hexaboride Sheets?
Answer: Common applications include use as thermionic emitters in electron microscopes, electron beam lithography systems, X-ray sources, and other devices requiring efficient electron emission. They are also used in high-temperature components and specialized coatings.
Q3: Why is Cerium Hexaboride preferred for electron emission applications?
Answer: CeB₆ is preferred due to its low work function, high electron emission efficiency, and stability at high temperatures, making it ideal for generating consistent electron beams in high-vacuum conditions.
