Lanthanum Hexaboride Sheet/Plate is used as cathode and even crucibles for the electric industry and frontier research. SMC provides lanthanum boride Plates and other LaB machined parts for both prototyping and scaled up productions.
As the Lanthanum: boron ratio is less than 1:4, LaB6 is considered a boron-rich material. Compared with other boride ceramics, lanthanum boride sheet, LaB6 sheet/plate, has more applications. This material could be machined into simple shapes, to be used as cathode and even crucibles for the electric industry and frontier research.
|
Product |
Lanthanum Hexaboride |
Structure |
Polycrystalline |
|
Symbol |
LaB |
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
|
LaB (% 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 |
|
* 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
SMC’s LaB 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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