What is aluminum nitride ceramic?

Aluminum nitride (AlN) is a technical ceramic material that features an extremely interesting combination of very high thermal conductivity and excellent electrical insulation properties. This makes aluminum nitride predestined for use in power and microelectronics applications.

Why is aluminum nitride expensive?

When Aluminum Nitride parts are made, they either come from a larger block and are machined out, or they are created when the material is in the softe “green” (pre-fired) state. Machining fired AlN is a very time consuming and expensive process because the material is so hard specialty diamond tooling is required.

What is aluminum nitride made from?

Aluminium nitride is synthesised by carbothermal reduction of alumina or by direct nitridation of aluminium. The use of sintering aids and hot pressing is required to produce a dense technical grade material.

What is aluminum nitride used for?

What is Aluminum Nitride? Aluminum Nitride (AlN) is an excellent material to use if high thermal conductivity and electrical insulation properties are required; making it an ideal material for use in thermal management and electrical applications.

Is aluminum nitride toxic?

Aluminum Nitride Toxicity Exposure to AlN through mouth, inhalation, or injection may cause bone and lung toxicity. Repeated exposure can irritate the eyes and skin.

Is aluminum nitride metal?

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Aluminium nitride (AlN) is a solid nitride of aluminium. It has a high thermal conductivity of up to 321 W/(m·K) and is an electrical insulator.

How hard is aluminum nitride?

AlN possesses excellent physical properties including high melting point of >2000°C, large thermal conductivity of 285 W m−1 K−1 (Slack et al., 1987), high hardness of ~12 GPa on the plane (0001), and good capability of high-temperature and chemical resistance.

Can you machine aluminum nitride?

Aluminum Nitride is a versatile material most often used in situations that demand both high thermal conductivity and electrical insulation. Applied Ceramics has extensive experience in aluminum nitride machining and can create blocks, sheets and bars.

Does aluminum nitride dissolve in water?

Aluminium nitride

Names
Solubility in water	hydrolyses (powder), insoluble (monocrystalline)
Solubility	insoluble, subject of hydrolysis in water solutions of bases and acids
Band gap	6.015 eV (direct)
Electron mobility	~300 cm2/(V·s)

How do you nitride aluminum?

Manufacture. AlN is synthesized by the carbothermal reduction of aluminium oxide in the presence of gaseous nitrogen or ammonia or by direct nitridation of aluminium. The use of sintering aids, such as Y2O3 or CaO, and hot pressing is required to produce a dense technical-grade material.

Does nitric acid dissolve aluminum?

Although chromium (Cr), iron (Fe), and aluminium (Al) readily dissolve in dilute nitric acid, the concentrated acid forms a metal-oxide layer that protects the bulk of the metal from further oxidation.

What is aluminum nitride ceramic? Aluminum nitride (AlN) is a technical ceramic material that features an extremely interesting combination of very high thermal conductivity and excellent electrical insulation properties. This makes aluminum nitride predestined for use in power and microelectronics applications. Why is aluminum nitride expensive? When Aluminum Nitride parts are made, they either come…