Localized Corrosion of 304 Stainless Steel under a NaCl Droplet

Abstract:

The distributions of corrosion potential and galvanic current of 304 stainless steel under a NaCl droplet were studied by using the wire beam electrode (WBE). It was found that the distributions of the electrochemical parameters were heterogeneous with isolated anodic and cathodic zones appeared randomly. During the corrosion process, the polarity of some anodes changed with the evolution of time. The localized corrosion rate and heterogeneity increased firstly, and then decreased afterward with the increase of time, which can be attributed to the cooperative effects of the aggressive ions and the corrosion products.

• Periodical: Key Engineering Materials (Volumes 480-481)
• Pages: 443-447
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.480-481.443
• Online since: June 2011
• Authors: Yan Hua Wang, Yuan Yuan Liu
• Keywords: Current Distribution, Droplet, Potential Distribution, Stainless Steel (SS), Wire Beam Electrode

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