Lanthanum Hexaboride (LaB6) Ceramics | Advanced Ceramic Materials

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Lanthanum Hexaboride (LaB6) Ceramics

Lanthanum Boride, also called Lanthanum Hexaboride or LaB6, is a 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 a coating of hot LaB6 filament or hot cathodes made of LaB6 crystals.

Borides are hard, high-melting materials with metal-like conductivity, and they are stable to nonoxidizing acids but break down in strong oxidizing agents and strong alkalis. Borides are used in semiconductors, superconductors, diamagnetic, paramagnetic, ferromagnetic, anti-ferromagnetic, turbine blades, and rocket nozzles.

Lanthanum Hexaboride Properties:

Low work function
High electron emissivities
Stable in vacuum

Products

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
Radiotherapy devices

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Your Lanthanum Boride Supplier

Advanced Ceramic Materials (ACM) is a leading supplier of lanthanum boride ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us for any questions about LaB6 or other ceramic materials that are not listed on the website.

FAQs

Q: What Is Lanthanum Boride?

A: Lanthanum Boride, also called Lanthanum Hexaboride or LaB6, is a refractory ceramic material.

Q: What Are the Properties of LaB6?

A: LaB6 has a low work function and one of the highest electron emissivity known, and is stable in a vacuum. 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 vacuum.

Q: What Is LaB6 Used For?

A: The principal use of lanthanum hexaboride is a coating of hot LaB6 filament, or hot cathodes made of LaB6 crystals. -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

Q: Tungsten Filaments vs. LaB6 Filaments

A: LaB6 filaments are sometimes used in place of tungsten filaments for microscopy because they generate a stronger beam and images with a higher resolution. LaB6 filaments also have higher longevity than tungsten filaments. However, tungsten filaments are more affordable. In addition, tungsten filaments are way easier to use and maintain than LaB6 filaments. ?

Properties

Chemical Formula	LaB6
Mechanical
Density	4.72 g/cm3
Hardness	4.2 GPa
Modulus of Elasticity	450 GPa
Flexural Strength	170 MPa
Compressive Strength	1.5-2.5 GPa
Poisson's Ratio	0.13
Fracture Toughness	2.0 MPa m½
Thermal
Coefficient of Thermal Expansion	6.5 x 10^-6/°C
Thermal Conductivity	60 W/(m*K)
Specific Heat	0.16 J/g·K
Shock Resistance	-
Maximum Working Temperature	2500 °C