Electrochemical Corrosion Inhibition of Steel in Alkaline Chloride Solution

The corrosion behaviour of type 316L stainless steel in aqueous 30-50 wt%. NaOH at temperatures up to 90 °C has been elucidated. Exposure to room temperature environment showed parabolic weight loss behaviour, with corrosion rates of up to 0.4 mm/year. Higher NaOH concentrations and exposure temperatures resulted in a reduced stability of the electrochemical passivity domain, associated with higher corrosion rates. Exposure to de-aerated 50 wt%. NaOH presented corrosion rates of up to 0.5 mm/year at open circuit potential, with maximum corrosion rates under polarisation of up to ≈ 18 mm/year. The formation of a dark iron-oxy-hydroxide and nickel-oxide was observed, with exposure to temperatures in excess of 50 °C. The behaviour of type 316L stainless steel in hot caustic environment is compared to types 204, 304, 2205 stainless steel, and nickel alloy 200.

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Silver Nanoparticle/Graphene Oxide/Chitosan Coatings for Protection of Surfaces in Food Processing

Fekry

Ahmed²,

Bioumy³

2020

J Bio Tribo Corros

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Electrochemical Corrosion Inhibition of Steel in Alkaline Chloride Solution

Cited by 18 publications

References 22 publications

Investigation of Corrosion Inhibition Property of Triazole-Based Schiff Bases on Maraging Steel in Acid Mixtures

Investigation of Corrosion Inhibition Property of Triazole-Based Schiff Bases on Maraging Steel in Acid Mixtures

Corrosion Behaviour of Type 316L Stainless Steel in Hot Caustic Aqueous Environments

Silver Nanoparticle/Graphene Oxide/Chitosan Coatings for Protection of Surfaces in Food Processing

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