Cerium Hexaboride Rod Description
Cerium Hexaboride Rod undergoes a precise fabrication process, predominantly sintering. In this method, powdered cerium hexaboride undergoes compression and heating, resulting in a dense, solid ceramic structure that retains the exceptional properties of cerium hexaboride. Crafted specifically for technological applications requiring top-tier electron emission performance, this ceramic disc excels in providing dependable and efficient electron beams. Celebrated for its high brightness, it markedly amplifies the intensity of the generated electron beam—an essential element for achieving unparalleled resolution in electron microscopy.
Cerium Hexaboride Rod 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 Rod Applications
1. Thermionic Emitters: CeB6 rods are commonly used as thermionic emitters in electron guns for electron microscopes, particle accelerators, and other scientific instruments. Their stable and efficient electron emission makes them ideal for generating consistent electron beams.
2. Electron Beam Welding: In electron beam welding, CeB6 rods are used as the electron source. The high thermionic emission properties allow for the creation of a focused and intense electron beam, which is essential for the precision welding of materials, especially metals and alloys.
3. Ion Thrusters in Spacecraft: CeB6 rods serve as electron emitters in ion propulsion systems, where their ability to operate efficiently at high temperatures helps generate the ionized plasma required for spacecraft propulsion.
4. X-ray Tube Cathodes: Similar to other CeB6 components, rods are used in X-ray tubes as cathodes, providing a reliable electron source for the generation of X-rays in medical imaging and industrial inspection.
5. Vacuum Tubes and Microwave Devices: In devices such as traveling wave tubes (TWTs) and klystrons used in telecommunications and radar systems, CeB6 rods are utilized as electron emitters, taking advantage of their stability and high emission efficiency.
6. Research and Experimental Applications: CeB6 rods are often used in experimental setups in research laboratories, particularly in studies involving thermionic emission, surface science, and high-temperature materials.
7. Field Emission Devices: CeB6 rods can be used in field emission devices (FEDs) for advanced display technologies, providing a stable and efficient source of electrons for displays.
8. High-Temperature Electronics: In specialized high-temperature electronics, CeB6 rods are used where reliable electron emission is needed under extreme thermal conditions.
Cerium Hexaboride Rod Packing
Cerium Hexaboride Rod 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 Rod FAQs
Q1: What is a Cerium Hexaboride Rod?
Answer: A Cerium Hexaboride (CeB₆) rod is a solid cylindrical piece made from cerium hexaboride, a material known for its excellent electron emission properties, high melting point, and chemical stability. These rods are used in various high-tech applications.
Q2: 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.
Q3: How are Cerium Hexaboride Rods manufactured?
Answer: CeB₆ rods are typically manufactured using powder metallurgy techniques, which involve pressing CeB₆ powder into a rod shape and then sintering it at high temperatures to achieve the desired density and mechanical properties.
