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Sivasambu Bohm

Sivasambu Bohm

TATA Steel R&D & IIT Bombay, India

Title: Anti-corrosion graphene protective coating

Biography

Biography: Sivasambu Bohm

Abstract

Corrosion has been a perennial issue of concern for the manufacturing industry. Chromate (VI) conversion coatings are well known pre-treatment coatings for steel but due to environmental concerns and legislations, their use and application has been restricted. This has led to a growing demand and need for an economically viable and eco-friendly pre-treatment coating. Graphene based anti corrosion coatings have been developed which can provide an eco-friendly alternative while also improving the overall performance of the coating system. Energy and Environment are key areas of technology for many Tata Group companies such as Tata Steel. Coating plays a vital role in improving surface quality and providing protection for the metal substrates. Graphene, a newly discovered carbon allotrope, received worldwide attention due to its exceptional properties owing to its unique structure. It is a very promising new generation of material that can trigger the fabrication of advanced coatings with much different functionality. In this work, utilization of graphene in advanced coatings for metal, Tata patented technology will be presented giving emphasis on the corrosion protection. A corrosion inhibitive coating composition was developed for metal substrate, which comprises monolayer and multi-layer graphene stacks and a coupling agent consists of an organo functional siloxane. Durability performance were studied this Cr(VI) free system against the commercially available system using electrochemical and accelerated corrosion testing. The future perspectives of graphene based coatings for industrial application and the importance with academics collaborations on specific areas of graphene research will be briefly discussed.