st be provided at the points of contact of two different metals/alloys.- Stainless steel:The corrosion resistance of these steels is due to their ability to form a protective oxide film on the surface. This "passive" film can be reinforced by treatment in certain chemical solutions. However, such steels will pit when exposed to harsh corrosive environments such as airborne salts and industrial pollutants. Particularly susceptible are crevices and other areas in which foreign materials collect. Corrosion can be prevented by keeping stainless steel clean. 6.Cost: The synthetic enamel painted on the atmosphere exposed metals costs 14 Rs per square meter. The epoxy treatment provided to the RCC pillars is very expensive. It is 500-800 Rs per square meter.7.Conclusion:The atmosphere of IITKanpur is quite clean and free of pollutants. But the RH is very high which lead to the corrosion problems. So prevention must be provided at all the corrosion prone sites. All the metal bodies exposed to air must be painted at least once in two years. The pipelines must be made up of CI, coated with protective layer and surrounded by sand. Except this the pipelines in the laboratories must be made up of PVC, as concentration of acids t, salts etc may be high there. And insulator must be applied in electric power supply pillars to prevent any stray currents and also to prevent galvanic corrosion at the point of contact of two different metals....
