The term graphite It has different uses and acceptances. It is, as described by the Royal Spanish Academy (RAE) , of a black and glossy mineral which is formed by a crystallized carbon.
In its structure, graphite has carbon atoms that develop a trio of covalent bonds in a single plane, at an angle of one hundred and twenty degrees. Therefore, it has a structure shaped like a hexagon .
Next to fullerenes and diamonds, graphite is one of the forms that have allotropy in which carbon can appear. It is in reserves and deposits of the nature , although it can also be produced artificially. China , Brazil and India They are the world's largest producers of graphite.
Graphite is used in the manufacture of various elements. Being a refractory material, it is used in production pots and bricks . It is also used as solid lubricant and is a driver of electricity .
If combined with a paste, graphite allows the production of pencils and about discs similar to vinyl. Graphite is even used in Nuclear reactors and in the manufacture of washers , pistons and other objects that are used in the field of engineering.
In the case of pencils, it is a mixture of natural graphite that is sprayed and of clay . This mixture is baked to acquire the necessary hardness.
Specifically, in addition to everything underlined, we can state that we find two clearly different types of graphite. Thus, in the first place, there is the so-called natural graphite which is the one that began to be exploited in the middle of the 16th century when the discovery of the first mine of this material that was unknown until that moment occurred.
This element, which in its origin was also known as plombagina for its lead-like color, is characterized primarily by the fact that it is made up of crystalline type aggregates. However, to this identity sign should also be added the one that presents various impurities and the one that has imperfections in regard to its shape.
Secondly, we find the well-known synthetic graphite that is identified as being graphite class carbon. At the beginning of the twentieth century it was when, for the first time, this type of material was prepared that certainly marked a before and after in the world of graphite applications and that is that it opened the range of possibilities.
Also it is necessary to emphasize that it is frequent that in this field mention is made to the term of graphite Acheson. A denomination under which is the pure synthetic graphite that is made from subjecting silicon carbide to high temperatures. Edward Goodrich Acheson, who began working on this line in 1893, was the one who discovered this process and its consequent result.
The word graphite, in other ways, allows us to refer to the text or illustration created by hand in ancient times . The term, on the other hand, names those signs or posters that are circumstantially inscribed on a wall.