Lanthanum Hexaboride Cathode
  • Lanthanum Hexaboride CathodeLanthanum Hexaboride Cathode
  • Lanthanum Hexaboride CathodeLanthanum Hexaboride Cathode

Lanthanum Hexaboride Cathode

Lanthanum Hexaboride (LaB6) cathodes usually show 10 times the brightness and 50 times the service life of tungsten cathodes. Nextgen Advanced Materials supplies Lanthanum Hexaboride Cathode with high quality and fast delivery and customized products are also available.

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Product Description

Lanthanum Hexaboride Cathode, LaB6 Cathode


Nextgen Advanced Materials INC is a professional leader Lanthanum Hexaboride Cathode manufacturer with high quality and reasonable price. Welcome to contact us. Lanthanum Hexaboride (LaB6) cathodes usually show 10 times the brightness and 50 times the service life of tungsten cathodes. In electron microscopy applications, these characteristics can convert more electron beam currents on smaller spots of the sample, improve resolution, and reduce the frequency of cathode replacement.


The unique properties of lanthanum hexaboride crystals provide a stable electron emission medium with a work function close to 2.70 eV. The low work function produces a higher current at a lower cathode temperature than tungsten, which means greater brightness or current at the beam focus, and a longer LaB6 cathode life.
We provide LaB6 cathode with customized dimensions; regular purity is 99.5%.

Lanthanum Hexaboride Material Specifications


Product

Lanthanum Hexaboride

Structure

Polycrystalline

Symbol

LaB6

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 Conductivity

6.65×104 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



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