Graphite has excellent chemical stability and, when specially processed, offers corrosion resistance, good thermal conductivity, and low permeability. It is widely used in making graphite electrodes, heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, coolers, heaters, filters, pumps, and other equipment. Despite its extensive applications, graphite can oxidize and burn at high temperatures, leading to increased porosity and structural looseness of the surface carbon layer, thereby reducing its lifespan. Here are methods to prevent graphite oxidation at high temperatures:
- High-Temperature Protective Coating: Applying a high-temperature resistant protective coating on the surface of graphite products can effectively seal and isolate the graphite from oxygen at high temperatures, thus preventing the oxidation reaction between graphite and oxygen.
- Oxygen Barrier Layer: An oxygen barrier layer prevents oxygen from penetrating into the graphite substrate. The quality of this anti-oxidation coating is crucial in determining its effectiveness in protecting the graphite.
By implementing these methods, the oxidation of graphite at high temperatures can be significantly reduced, thereby extending the service life of graphite products.