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Nitrogen is highly corrosive and forms a series nitrides that include ionic and covalent nitrides as well as metallic nitrides.
The ionic nitrides consisting of alkali metals and alkaline Earth metals have crystals dominated by their ionic bonds. Nitrogen elements are found in N3- which is also called saltlike nitrides. Li3N, at the moment, is all that’s used to make ionic nitrides. Li3N, a dark red solid with a hexagonal crystalline system and a melting temp of 813degC, is a dense solid. Simple synthesis with high ionic conducting properties. It is a solid lithium electrode that can be combined either with a liquid or granular form.
Covalent Nitrides
These nitrides consist of mainly covalent bonding. Compounds containing oxygen, VIIA-group elements and nitrogen should be called nitrogen oxides, or nitrogen halos. The covalent nitrides most widely used are those from group IIIa elements and IVA (such Bn, AlN GaN InN C3N4 Si3N4). Diamond nitride is so called because its structural unit is similar. High hardness, melting point and chemical stability. They are mostly semiconductors or insulators. They are widely used in cutting instruments, high-temperature materials, microelectronics devices, luminous material and other fields.
Metallic Nitride
These metallic nitrides are filled nitrides. Nitrides made by transition metals have nitrogen atoms located in the spaces between hexagonal or cubic metal lattices. These nitrides are not stoichiometric and their composition is flexible within a certain range. The majority of metal nitrides have a chemical formula Mn and are NaCl types. It is characterized by metallic lusters, high electrical conductivity and melting points, corrosion resistance, wear resistance, and high hardness. It can be used in cutting materials as well as electrode materials, catalyst materials, etc.
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