Carbon brushes Electrical Applications
The main application for amorphous graphite as an electrical material is in the manufacture of carbon brushes in electric motors. In this application the performance and lifetime of the component is very dependent on grade and structure.
It is made from the carbon black, graphite, coke and a variety of carbon powder materials. After about 2500 ℃ high temperature processing, the various carbon materials become microcrystalline artificial graphite. It has excellent self-lubricating properties and, less wear on the commutator. It is widely used in various types of AC and DC motor.