Abstract

STUDY ON CORROSION PROTECTION: BY DEVELOPMENT OF ACID VAPOUR CORROSION RESISTANCE COATING OF PLATYCLADUS ORIENTALIS (MORPANKHI) SEEDS

Lucky, Ranveer Singh, Vikas Kumar Maury, Jeetendra Kumar Chaudhary and Tej Pratap Singh*

ABSTRACT

HCL is a very dangerous corrosive pollutant. This gas produces dangerous effect of corrosion on materials. It reacts with moist oxygen to form chlorine whicha generates corrosion problems with materials. It changes their physical, chemical and mechanical properties and tarnishes their appearance. Iron is a very important engineering metal and it is used for several appliances in day to day life. Iron is highly sensitive toward moist HCL. It develops corrosion cell on the surface of Iron and undergoes with corrosion reaction. Metal exhibits galvanic corrosion, pitting corrosion, crevice corrosion, and stress corrosion. The concentration of HCL gas is increasing day by day in the atmosphere due to industry, transport, road, housing, infrastructure development works and decomposition of living organisms. Its concentration was measured in summer, rainy and winter seasons in industrial areas of different cities and its corrosive effect studied on Iron. It is observed that concentration of HCL gas varies from season to season. Its concentration is more in winter than in summer and rainy. This result shows that Iron corrodes more in winter seasons with respect of summer and rainy seasons. Chloride is reported to play a significant role in Corrosion reaction, products and kinetics of ferrous metals. Humidity and Temperature are two important parameters in addition to metal properties and chemicals involved in the process. Carbon Steel is more susceptible to chloride attack than Iron.

Keywords: pH, Temperature, Pitting Corrosion, Metals, Hydrochloric Acid, Emery paper.