Probability Analysis of Pit Initiation on Austenitic Stainless Steels

摘要

The influence and mechanism of microscopic pit initiation on austenitic stainless steels were analyzed. Based on the electrochemical theory, a model was proposed to judge the pit initiation on austenitic stainless steels in the weak acidic chloride solution. Although the model was developed based on deterministic equations, it can be used to analyze the randomness of pit initiation. Furthermore the probability distribution of major parameters was also discussed. This study enriches the stochastic theory of pit initiation.