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Aluminium nitride (Al N) is a solid nitride of aluminium. It has a high thermal conductivity of up to 321 W/(m·K) [ 5 ] and is an electrical insulator. Its wurtzite phase (w-AlN) has a band gap of ~6 eV at room temperature and has a potential application in optoelectronics operating at deep ultraviolet frequencies.
Aluminium oxynitride (marketed under the name ALON by Surmet Corporation [3]) is a transparent ceramic composed of aluminium, oxygen and nitrogen. Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet , visible, and mid-wave- infrared regions of the electromagnetic spectrum.
Four pnictides, aluminium nitride (AlN), aluminium phosphide (AlP), aluminium arsenide (AlAs), and aluminium antimonide (AlSb), are known. They are all III-V semiconductors isoelectronic to silicon and germanium, all of which but AlN have the zinc blende structure. All four can be made by high-temperature (and possibly high-pressure) direct ...
Aluminium nitride forms from a number of reactions including the reaction of cryolite with nitrogen and sodium according to the equation - Na 3 AlF 6 + 0.5N 2 + 3Na → AlN + 6NaF [16] Gases are generated from reactions of water with compounds such as un-oxidised aluminium, un-oxidised sodium metal, aluminium carbide and aluminium nitride.
formula properties reference aluminium oxynitride ALON transparent, tough Lithium silicon oxynitride LiSiON Pca2 1 Wurtzite structure a=5.1986 b=6.3893 c=4.7398 [3] SiAlON SiAlNO (Li,Mg,Y,Le,Ce,Eu) Silicon oxynitride sodium silicon oxynitride NaSiON white Wurtzite structure [3] Sinoite Si 2 N 2 O mineral Li 14 Cr 2 N 8 O P 3 a=5.799 c=8.263 [3 ...
Aluminium (or aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13. Aluminium has a density lower than that of other common metals, about one-third that of steel. It has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air.
There are many mixed oxides containing aluminium where there are no discrete or polymeric aluminate ions. The spinels with a generic formula A 2+ B 3+ 2 O 2− 4 that contain aluminium as Al 3+, such as the mineral spinel itself, MgAl 2 O 4 are mixed oxides with cubic close packed O atoms and aluminium Al 3+ in octahedral positions.
Aluminium nitrate cannot be synthesized by the reaction of aluminium with concentrated nitric acid, as the aluminium forms a passivation layer. Aluminium nitrate may instead be prepared by the reaction of nitric acid with aluminium(III) chloride. Nitrosyl chloride is produced as a by-product; it bubbles out of the solution as a gas.