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LA1409 Lanthanum Boride Powder, LaB6 Powder

  • Catalog No. LA1409
  • Molecular Formula LaB6
  • Molecular Weight 203.78
  • Appearance Purple
  • Melting Point 2210 °C
  • Density 4.72 g/cm3
  • Solubility in Water 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 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


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.

Related Documents
Lanthanum Hexaboride SDS
SAFETY DATA SHEET of Lanthanum Hexaboride
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