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Lanthanum Hexaboride Ceramic Part, LaB6 Parts

Lanthanum Hexaboride Ceramic Part, LaB6 Parts

Lanthanum hexaboride (LaB6) ceramic parts are high-performance components used in various applications, including electron microscopy and vacuum technology. These parts are made of a high-purity LaB6 powder that is molded and sintered under high temperatures and pressures to create a dense and durable ceramic structure.

LaB6 ceramic parts are known for their excellent thermal and electrical conductivity, low outgassing rates, and high-temperature stability. They are resistant to oxidation and can withstand harsh vacuum environments, making them ideal for use in high-temperature furnaces, semiconductor processing, and other demanding applications.

Common LaB6 ceramic parts include crucibles, plates, rings, and other custom-machined components. They are available in a range of sizes and shapes to meet specific application requirements. The high purity of LaB6 powder used to make these parts ensures high-quality and consistent performance in critical applications.


Lanthanum Hexaboride Properties 

Compound Formula LaB6
Molecular Weight 203.78
Appearance Purple to Violet
Melting Point 2210 °C
Density 2.61 g/cm3


Lanthanum Hexaboride 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

Lanthanum Hexaboride Ceramic Part Specification

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

Lanthanum Hexaboride Chemical Composition

LaB6 (% min.)


B(% min.)


Rare Earth Impurities

Non-RE Impurities


< 120ppm


< 250ppm


< 150ppm


< 100ppm


< 180ppm


< 90ppm


< 112ppm


< 300ppm


< 250ppm


< 100ppm




< 100ppm

Lanthanum Hexaboride Ceramic Part 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

Material Data for LaB6 and CeB6

  CeB6 LaB6
Brightness (A/cm2-sr) 107 107
Short-term beam current stability % RMS < 1 < 1
Typical service life (hr) 1,500+ 1000+
Operating vacuum (torr) 10-7 10-7
Work function (eV) ~2.65 ~2.70
Evaporation rate (g/cm2-sec) 1.6 x 10-9 2.2 x 10-9


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.



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