Aluminum nitride, molecular formula AlN, is a chemical compound of aluminum and nitrogen. It crystallizes in the wurtzite structure within the hexagonal space group P6 3 mc. The Al atoms form a dense sphere packing on a hexagonal lattice, the N atoms occupy half of the tetrahedral gaps of this lattice. The lattice constants are a: 3,1114 Å and c: 4,9792 Å. The radiopacity of AlN is 3.26 g / cc. Aluminum and nitrogen are predominantly covalently bonded, the proportion of ionic bond is 45%. The molecular weight M is 40.99 u. In a nitrogen atmosphere, it has a melting point of 2000 ° C and otherwise sublimation point of 2000 ° C and has hardness according to Mohs of. 9, These are the features of aluminum nitride that you should know about.
Aluminum nitride ceramic
Aluminum nitride ceramic is usually sintered at temperatures of about 1800 ° C without …