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Lanthanum Hexaboride Tube
Lanthanum Hexaboride Tube is a high-performance electron emission material known for its excellent electrical conductivity, thermal stability, and minimal evaporation under high-temperature conditions. Widely used as a cathode in advanced vacuum electronic devices, LaB6 tube plays a crucial role in electron microscopes, X-ray sources, plasma generators, and electron beam welding systems. Its robust structure and reliable emission properties make it essential for applications demanding consistent performance and long service life. We can supply high-quality yttria stabilized zirconia tube with various specifications and competitive prices, offering customized solutions to meet specific requirements.
Or email us at sales@heegermaterials.com.Lanthanum Hexaboride Tube Data Sheet
| Color: | Purple |
| Chemical Formula: | LaB6 |
| Diameter Range: | customized |
| Length Range: | customized |
Lanthanum Hexaboride Tube Description
Lanthanum Hexaboride Tube is a premium cathode material recognized for its exceptional thermionic emission properties, high melting point, and remarkable chemical stability. Its low work function of approximately 2.4 eV enables efficient electron emission at relatively low temperatures, reducing energy consumption and extending component lifespan. This makes the LaB6 tube an essential component in a wide range of advanced vacuum electronic devices, including electron microscopes, X-ray generators, plasma sources, and electron beam welding equipment. The tube’s robust ceramic structure provides excellent resistance to thermal shock, oxidation, and evaporation, ensuring reliable performance even under harsh high-vacuum and high-temperature operating conditions.
Lanthanum Hexaboride Tube Chemical Compositions
| LaB6 Purity: 99%, 99.9%, 99.9995%, B(% min.): 31% | |||
| Rare Earth Impurities | Non-RE Impurities | ||
| Ce | <120ppm | Fe | <250ppm |
| Pr | <150ppm | Si | <100ppm |
| Nd | <180ppm | Ca | <90ppm |
| Sm | <112ppm | C | <300ppm |
| Y | <250ppm | Mg | <100ppm |
| Ti | <100ppm | ||
Lanthanum Hexaboride Tube Features
- High Thermionic Emission Efficiency: Lanthanum hexaboride tube provides superior electron emission due to its low work function, ensuring high brightness in electron beam applications.
- Excellent Thermal Stability: With a melting point exceeding 2500 °C, the lanthanum hexaboride tube maintains structural integrity under extreme temperatures.
- Low Evaporation Rate: Lanthanum hexaboride tube exhibits minimal material evaporation in high-vacuum environments, prolonging operational life.
- Strong Chemical Resistance: Resistant to oxidation and chemical corrosion, the lanthanum hexaboride tube performs reliably in harsh and reactive atmospheres.
- Robust Mechanical Strength: The ceramic structure of the lanthanum hexaboride tube provides excellent durability and resistance to thermal shock and mechanical stress.
Lanthanum Hexaboride Tube Applications
- Electron Microscopy Cathodes: Lanthanum hexaboride tube is widely used as a high-brightness cathode material in scanning electron microscopes (SEM) and transmission electron microscopes (TEM).
- X-ray Generation: Lanthanum hexaboride tube serves as a reliable cathode in X-ray tubes, providing stable electron emission for consistent X-ray production.
- Plasma Generation Systems: Used in plasma sources for devices like plasma-enhanced chemical vapor deposition (PECVD), lanthanum hexaboride tube ensures stable plasma formation under high vacuum.
- Electron Beam Welding: Lanthanum hexaboride tube enables precise and efficient electron beam generation for welding applications in aerospace and automotive industries.
- Vacuum Electronic Devices: Lanthanum hexaboride tubes are essential in vacuum tubes, particle accelerators, and mass spectrometers, where stable electron emission and durability are critical.
Lanthanum Hexaboride Ceramic Properties
Lanthanum Hexaboride Ceramic Material Machining
Lanthanum Hexaboride (LaB6) Ceramic is a specialized material prized for its excellent thermionic emission, high melting point, and chemical stability. These properties make it essential in electron emission applications but also pose challenges in machining due to its hardness and brittleness. Key machining considerations include:
- Cutting: Precision diamond-coated tools or laser cutting methods are necessary to achieve clean edges while preventing microcracks and surface damage.
- Grinding: Fine diamond grinding wheels provide the accuracy needed to maintain dimensional tolerances and surface smoothness, particularly for intricate or small components.
- Drilling: Ultrasonic or abrasive waterjet machining techniques are often used to create precise holes and features without inducing thermal stress or cracking.
- Surface Finishing: Polishing processes improve surface quality, reduce electron scattering, and enhance emission efficiency, which is critical for high-performance cathode applications.
Lanthanum Hexaboride Ceramic Packaging
Lanthanum hexaboride ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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