Cerium Hexaboride Tube Description
Cerium Hexaboride Tube is renowned for its unique attributes, particularly its ability to emit electrons via thermionic emission when subjected to heat. Meticulously engineered to yield dependable and efficient electron beams, CeB6 Tube finds its purpose in leading-edge technological applications that demand top-tier electron emission performance. Revered for its thermionic characteristics, stability, and proficiency in achieving high brightness, CeB6 significantly elevates electron microscopy resolution. Embrace precision and reliability with the Cerium Hexaboride Sheet, an essential player in advancing electron emission capabilities.
Cerium Hexaboride Tube Specification
|
Parameter
|
Units
|
CeB6
|
|
Stoichiometry
|
N/A
|
~6
|
|
Metal Impurities
|
Ppm by wt.
|
<30
|
|
Density
|
g/cm3
|
4.80
|
|
Coefficient of Thermal Expansion
|
α*106
|
6.2
|
|
Electrical Resistivity
|
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 Tube Applications
1. Thermionic Cathodes for Cylindrical Devices: CeB6 tubes can be used as thermionic cathodes in cylindrical devices such as electron guns and X-ray tubes. The tubular shape allows for the uniform emission of electrons along the inner or outer surface, making them suitable for applications that require a cylindrical electron beam.
2. Plasma Generation and Ion Thrusters: CeB6 tubes can serve as electron sources in plasma generation devices and ion thrusters, particularly in configurations where a tubular geometry is beneficial for the uniform emission of electrons to ionize gases and create plasma for propulsion in spacecraft.
3. Vacuum Tubes and Cylindrical Microwave Devices: In cylindrical vacuum tubes and microwave devices such as traveling wave tubes (TWTs) or magnetrons, CeB6 tubes can be used as electron emitters. Their geometry is ideal for creating cylindrical electron beams, which are often required in these applications.
4. High-Temperature Insulation and Structural Components: CeB6 tubes can act as structural components or insulating sleeves in high-temperature environments, such as in furnaces or reactors. Their stability at elevated temperatures makes them suitable for protecting other materials or guiding thermal processes.
5. Electron Beam Welding: In electron beam welding, CeB6 tubes can be used to create focused electron beams for precision welding. The tubular shape can be advantageous for certain welding geometries or applications where a cylindrical beam path is required.
6. Surface Science and Materials Research: CeB6 tubes are used in surface science research and materials studies, particularly in experimental setups that involve high-temperature thermionic emission or where cylindrical surfaces are needed for specific experimental conditions.
7. High-Temperature and High-Vacuum Electronics: CeB6 tubes can be used in high-temperature and high-vacuum electronics, where their tubular shape and material properties are beneficial for both thermal management and reliable electron emission in harsh environments.
8. Advanced Coatings and Liners: CeB6 tubes may be used as coatings or liners in cylindrical high-temperature systems, where their resistance to oxidation and thermal degradation protects the inner components of reactors, furnaces, or other industrial equipment.
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 Tube?
Answer: A Cerium Hexaboride (CeB₆) tube is a cylindrical piece made from cerium hexaboride, a material renowned for its excellent electron emission properties, high melting point, and chemical stability. These tubes are used in various advanced industrial and scientific applications.
Q2: What are the common applications of Cerium Hexaboride Tubes?
Answer: Common applications include use as thermionic emitters in electron microscopes, electron beam devices, X-ray sources, and other vacuum electronics. They are also used in high-temperature environments and specialized scientific instruments.
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.
