Initiation and propagation of a single pit on stainless steel using a local probe technique

摘要: Experiments about single pit initiation and propagation were performed on 316L stainless steel with the aim to determine pitting corrosion behaviour for nuclear waste containers. The experimental setup permits control development at will create reproducible pits in three dimensions. Radial deep evolutions of a disc shaped studied times up 10 hours. These used what limiting mechanism takes place during long-term propagation. Special attention has been paid chloride ion action pitting. A minimum concentration was found be necessary bulk electrolyte support existence critical depth 230 μm also underlined.