Effect of 84 Disinfectant on Corrosion of 304 Stainless Steel
The work aims to explore the corrosion behavior and mechanism of 304 stainless steel(304SS)in 84 disinfectant.The macroscopic and microscopic corrosion morphology of 304 stainless steel was observed by digital camera and three-dimension microscope.The effect of 84 disinfectant on corrosion behavior of 304 stainless steel was studied in combina-tion with electrochemical analysis.At the initial stage of spraying experiment,a small number of shallow pitting pits could be observed on the stainless steel surface,the corrosion potential increased,and the corrosion current density decreased.With the extension of spraying time,in the later period of the experiment,the pitting pit increased and became larger,the corrosion poten-tial decreased,the corrosion current density increased,the corrosion resistance of 304 stainless steel decreased,and the corrosion rate increased.When spraying 84 disinfectant in atmospheric environment,304 stainless steel has local corrosion.At the begin-ning of the experiment,NaClO promotes the formation of stainless steel passivation films,and the corrosion rate decreases.With the extension of spraying time,the reduction of NaClO to Cl-causes the passivation film to break and promotes the pitting corrosion of stainless steel.
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