Graphite

What is Graphite?

Graphite is a type of crystal carbon and a half metal along with being one of the renowned carbon allotropes. Under the conditions that are ideal, it would be one of the most stable forms of carbon available. To define the standard state of heat for making compounds of carbons.

graphite

Graphite

Structure of Graphite:

Graphite

Graphite Structure Animation

This crystal carbon has a structure that is planar and layered. Graphene is the term used to denote each layer of the same.  Every layer has atoms of carbon arranged in a honeycomb-like a network with the division of 0.142 nm with 0.335 nm distance between planes. There is a covalent bonding for atoms in the plane with the criteria being met by only three out of four probable bonding sites. The graphite would be conducive electrically owing to the fourth electron having a chance to migrate into the plane. The layers of the carbon crystal could swiftly move past each other as the layers could be separated easily as van der Waals bonds that are weak hold them together.

The widely known types of this carbon crystal viz. beta and alpha have almost the same material properties with the exception of the layers of graphene stack a little differently. The alpha crystal would seem bent or as flat. To convert one form to other viz. from alpha to beta it could be done by treating it mechanically. Then from beta to alpha conversion would be done by heating the crystal above 1300 °C.

Graphite

Graphite Structure

As the photons travel faster through the planes that are narrowly built but moves slowly from one plane to the next, the carbon crystal has heavily anisotropic thermal and acoustic features.  The uses of the crystal include electrodes and refractories used in applications for processing materials in high temperature all due to the single reason that Graphite has high thermal and electrical conductivity and high thermal stability. Mainly at temperatures of 700 °C and above, the crystal carbon undergoes oxidation to form CO2.

Uses of Graphite:

  • In modern times, Graphite is usually consumed in steel making, brake linings, lubricants, foundry facings, batteries to name a few.
  • One of the important components of graphite viz. graphene has certain special features and is one of the widely known strong materials. To separate the component from the carbon crystal would require better advances in technology.
  • The uses of the crystal include electrodes and refractories used in applications for processing materials in high temperature.

From the above discussion, it is evident that graphite is one of the most prominently used things on the planet and would continue to be used in the years to come.


Practise This Question

Based on the mode of their formation, polymers can be classified as?