The effect of elastic tensile stress on inhibition behavior of N-lauroylsarcosine sodium for 304L stainless steel pitting corrosion

N-lauroylsarcosine sodium is proved to be effective in inhibiting 304L SS pitting corrosion. Under various elastic tensile stresses, the inhibition behavior of N-LSS on 304L SS pitting corrosion is studied, and N-LSS increases significantly 304L SS pitting potential by more than 400 mV. Under small elastic tensile stress (≤16.63%σ0.2), the adsorption of N-LSS can inhibit 304L SS pitting corrosion by enhancing the protection of N-LSS film and specific adsorption effect of N-LSS. Under large elastic tensile stress (≥46.84%σ0.2), the decrease of N-LSS adsorption effect reduces the inhibition effect of N-LSS specific adsorption for 304L SS pitting corrosion growth.