Graphite is one of the softest minerals, an allotrope of elemental carbon, and a crystalline mineral of carbonaceous elements. Its crystalline framework is a hexagonal layered structure; the distance between each mesh layer is 340 skins. m, the spacing of carbon atoms in the same network layer is 142 picometers, belonging to the hexagonal crystal system, with complete layered cleavage, the cleavage surface is dominated by molecular bonds, and the attraction to molecules is weak, so its natural floatability Very good; the periphery of each carbon atom is connected to three other carbon atoms by covalent bonding to form a covalent molecule; since each carbon atom emits an electron, those electrons can move freely, so graphite is a conductor, Uses of graphite include the manufacture of pencil leads and lubricants, among others.
The chemical properties of graphite are very stable, so graphite can be used as pencil lead, pigment, polishing agent, etc., and the words written with graphite can be stored for a long time.
Graphite has the properties of high temperature resistance, so it can be used as a refractory material. For example, the crucibles used in the metallurgical industry are made of graphite.
Graphite can be used as a conductive material. For example, carbon rods in the electrical industry, positive electrodes of mercury positive current devices, and brushes are all made of graphite.
Post time: May-11-2022