Impact of environmental factors on the degradation of various steel grades over time

सार

The pace at which metals and other materials corrode is significantly
influenced by atmospheric pollutants including SO2, NO2 and CO2. The rate of corrosion in steels is determined by their chemistry. Studies conducted in numerous nations have shown that pollution has a significant impact on corrosion rate. When moisture combines with the acidic gases produced by factories, the atmosphere becomes acidic. The corrosion behavior of two steel types—plain carbon steel (PCS) and weathering steel (WS)—exposed to the atmosphere of Jharsuguda is described in this study. The exposure of the samples took place between 2014 and 2019. Compared to WS, PCS exhibits a higher rate of corrosion. This is explained by the development of protective, nonporous oxide layers on WS. Raman spectroscopies validate the findings. The mechanism of air pollutants has been ascertained by analyzing the dusts collected at Jharsuguda. Laboratory researches on exposed samples have been conducted in order to determine the mechanism and comprehend the causes. Raman spectroscopy and other techniques have been used to investigate the mechanisms behind the degradation of various steel grades.