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LA1409 Lanthanum Boride Powder, LaB6 Powder

LaB6 Powder Properties

Lanthanum Hexaboride powder

Compound Formula LaB6
Molecular Weight 203.78
Appearance Purple
Melting Point 2210 °C
Density 4.72 g/cm3
Solubility in H2O Insoluble
Crystal structure Cubic


LaB6  Powder Description

Lanthanum Boride, also called Lanthanum Hexaboride or LaB6, is an inorganic chemical and refractory ceramic material. It has a high melting point of 2210 °C and is insoluble in water and hydrochloric acid. It has a low work function and one of the highest electron emissivity known, and is stable in a vacuum. Therefore, the principal use of lanthanum hexaboride is as a coating deposited by physical vapor deposition of hot LaB6 filament, or to manufacture hot cathodes made of LaB6 single crystals. It is also used as a size/strain standard in X-ray powder diffraction to calibrate instrumental broadening of diffraction peaks.

LaB6 Powder Specifications

Product Lanthanum Hexaboride Structure Polycrystalline
Symbol LaB6 cathode 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 6.65×104  S/cm (20℃)
Melting Point 2528 K Current Denstiy 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


LaB6 Powder 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
-Radio therapy devices

Packing Service

ACM’s LaB6 Powder is 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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Lanthanum Hexaboride (LaB6) Powder
Average rating:  
 1 reviews
by Omar Lopez on Lanthanum Hexaboride (LaB6) Powder
Much better the I bought in other places

Perfect! I love them!

Will definitely purchase again.

Better than the ones I bought from another big wholesale company.