Graphene Helps To Prevent The Steel From Rusting
An Indian researcher and his partner invented a new technology that uses graphene to prevent steel from rusting.
Steel rusting is a big problem in the automotive industry. Although covered with paint, it is easy to scratch and chrome is applied to the bumper. The process involves the addition of toxic chemicals
To solve this problem, SUNY Buffalo chemistry professor Sarbajit Banerjee and doctoral student Robert Dennis developed a polymer composite containing graphene
Graphene is a layer of carbon atoms, it has hydrophobic and strong electrical conductivity. These properties allow steel to reduce the electrochemical reaction of iron rusting iron while it is exposed to water.
The two researchers added the composite coating to a varnish, applied it to steel, and then submerged it in salt water. In a typical winter climate, the mixture of salt water and salt and snow is different and a car encounters a car, so it is very effective as a very poor environmental alternative.
Initially, the varnished steel sheet only survived a few days in brine. However, by adjusting the concentration and dispersion of added graphene, Banerjee and Dennis can keep the varnish in this environment for a month.
Banerjee said he wants to add something to the coating that detects changes in the pH of the water near scratches and reacts with the water in a way that seals the cracks.
Although this technology is a long way from commercialization, some large companies in the steel industry are also interested in participating in the study, especially Tata Steel, which has already financed Banerjee's experiment. The two scientists also received $ 50,000 in grants from the New York State Institute for Pollution Prevention.
In a press release, Banerjee said the paint can be produced using existing equipment at a local steel plant.
Unlike hexavalent chromium, which is used to coat bumpers and some engines, graphene is non-toxic because it is a carbon atom and does not require the use of strong acids and is safe throughout the process. These reasons make graphene a magical material for future electronic components.