Lanthanum Hexaboride (LaB6) Tube Description
Lanthanum Hexaboride Tube (LaB6 tube) is an inorganic chemical. With a melting point of 2528 K, the LaB6 tube is a refractory ceramic material, which is insoluble in water or hydrochloric acid and very stable in a vacuum. Stoichiometric samples are colored intense purple-violet, while boron-rich ones (above LaB6 tube) are blue. Ion bombardment changes its color from purple to emerald green. The LaB6 tube is a superconductor with a relatively low transition temperature of 0.45 K.
Lanthanum Hexaboride (LaB6) Tube Specification
Product
|
Lanthanum Hexaboride
|
Structure
|
Polycrystalline
|
Symbol
|
LaB6 tube
|
Thermal Conductive
|
47 W/mK (20℃)
|
Cas No.
|
12008-21-8
|
Thermal Expansion
|
6.2 10-6K-1 (20-900℃)
|
Atomic Mass
|
203.78 g/mol
|
Electrical Resistance
|
ca.15 μΩ cm (20℃)
|
Density
|
4.72 g/cm3
|
Electrical Conductive
|
6.65x104 S/cm (20℃)
|
Melting Point
|
2528 K
|
Current Density
|
150 A/cm2 (1950℃)
|
Hardness
|
87.5 RA
|
Electron Emissivity
|
2.6 eV
|
Flexure Strength (σ)
|
200 Mpa
|
Fracture toughness (Kic)
|
3.0 MN/m3/2
|
Chemical Composition
LaB6 (% min.)
|
99.9%
|
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 (LaB6) Tube Applications
* Thermionic emission (cathode)
* Plasma source for plasma enhanced coating(PECVD)
* Vacuum electron beam welding machine
* Electron beam surface reforming device
* Electron beam lithography device
* Transmission electron microscope
* Scanning electron microscope
* Surface analysis device
* Radiotherapy devices
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Lanthanum Hexaboride (LaB6) Tube Packaging
SAMs’ LaB6 ceramics are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
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Prototyping service is also available for other ceramics material
Alumina
Aluminum Nitride
Boron Nitride
Silicon Carbide
Silicon Nitride
Zirconia


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What is Lanthanum Hexaboride Electrode