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LA1406 Lanthanum Hexaboride (LaB6) Cathode Maximize

LA1406 Lanthanum Hexaboride (LaB6) Cathode

Catalog No.LA1406
SizeCustomized
MaterialLaB6
Purity98%, 99%, 99.9%
ShapeCathode

As a leading global supplier of advanced ceramics, Stanford Advanced Materials (SAM) provides consistently high-quality Lanthanum Hexaboride Cathode (LaB6 ceramic). We're capable of supplying custom materials per any specs/drawings you provide us with.

Other shapes of LaB6 cathode product: Lanthanum Boride Sputter TargetLanthanum Hexaboride (LaB6) Disc

More details

Description of Lanthanum Hexaboride Cathode

Lanthanum Hexaboride Cathode(LaB6 cathode, also called lanthanum boride cathode and LaB6 cathode) is an inorganic chemical. With melting point 2528 K, LaB6 cathode is a refractory ceramic material, which is insoluble in water or hydrochloric acid and very stable in a vacuum. LaB6 cathode Stoichiometric samples are colored intense purple-violet, while boron-rich ones (above LaB6.07) are blue. Ion bombardment changes its color from purple to emerald green. LaB6 cathode is a superconductor with a relatively low transition temperature of 0.45 K.

The unique properties of lanthanum hexaboride crystals provide stable electron emitting media with work functions near 2.70 eV. The low work function yields higher currents at lower cathode temperatures than tungsten, which means greater brightness, or current at the beam focus, and longer life. Typically, LaB6 cathodes exhibit 10 times the brightness and 50 times the service life of tungsten cathodes. In electron microscope applications, these characteristics translate to more beam current in a smaller spot at the sample, improved resolution, and less frequent cathode replacement.

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Specification of Lanthanum Hexaboride Cathode

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

6.65x104  S/cm (20℃)

Melting Point

2528 K

Currency 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

LaB6 (% 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


Applications of Lanthanum Hexaboride Cathode

* 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

 

 

Packing of Lanthanum Hexaboride Cathode

SAMs’ LaB6 cathode is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

 

 

Prototyping service also available for other ceramics material

Alumina

Aluminum Nitride

Boron Nitride

Silicon Carbide

Silicon Nitride

Zirconia

  



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