Substantial research work is carried out for development of variety of coatings to protect metal when exposed to severe corrosive medium such as seawater, industrial salt water, biofluids, thermic fluids, high-temperature gases etc. Examples of such advancements include use of nanoparticles and nanotubes in coating formulation, new conversion coatings, novel plasma coatings etc. This is evidenced by recent advanced research work include use of innovative electrochemical and metallic conversion coating approaches. Investigation of new coating materials such as hybrid polymers, composites, nano scale materials and ceramics results in the discovery of multifunctional corrosion resistant coatings also evidenced a new era of protective coating segment.