Question

ધાતુ નો વધારા માં ક્ષતિ NaCl માટે સમજાવો​

Answer 1

Answer:

would say the chloride ions are most likely causing the stainless steel to lose its passivity through the oxide structure's defects i.e cracks, non metallic inclusions, pits, pores, etc. Structure defects are a probable cause of pitting corrosion.

The presence of Cr(III) oxide being oxidized to Cr(VI) leads most likely to the pit initiation due to the increase in the local acidity.

The chloride ions lead to the formation of an intermediate complex between the metal surface and the Cl−; stimulating the pit initiation (mechanism if Zhang and Zhang (1993) ).

You should consider performing the cyclic voltammetry to determine the pitting potential to assess the electrode behavior at different concentration to figure out the critical concentration under which the localized corrosion occurs for your cell.