A Contribution to the Applicability of Critical Pitting Potentials

Abstract

not Available.

The effect of concrete pore solution composition on the quality of passive oxide films on black steel reinforcement

“…The choice of scan rate is a compromise between accuracy and the time to complete the measurement. It was found in this study that slower scan rates did not significantly change the results, which is consistent with other studies [23][24][25]. The pH, dissolved oxygen, and conductivity of the solutions were measured with a VWR SympHony SP90M5.…”

Correlation between Corrosion Potential and Pitting Potential for AISI 304L Austenitic Stainless Steel in 3.5% NaCl Aqueous Solution

“…The Ep value is the potential at which a sudden increase in the current is observed. However, for a given metal (considered as having a given chemical composition and a given microstructure) the Ep value obtained by this technique depends on the following testing variables: the potential scanning rate [2][3][4][5][6] , the surface finish of the sample [7][8][9][10][11][12] , the aeration conditions of the electrolyte 13 , the immersion time prior to the test 6,8 , and the geometry of the sample 14 . Moreover, the obtained anodic curve does not always yield a precise measurement of Ep.…”

Stochastic Modeling of the Influence of Environment on Pitting Corrosion Damage of Radioactive-Waste Containers

“…An example of how this capability could be used to predict the distribution of pit depths for a plausible HLRW container environmental history has been presented elsewhere [4]. In this paper, the capability to model the effects of a changing environment are demonstrated by simulating the potentiodynamic "sweep" experiment commonly used to determine the pitting potential [13]. This example also demonstrates one way in which standard experimental data could be used to determine whether eqn.…”

“…As discussed in detail by Shibata and Takeyama [3,14,15], the stochastic theory of pitting predicts that Ep is actually a distributed quantity for any given v. From a simple algebraic stochastic theory based on birth processes only, Shibata and Takeyama [14,15] Since the Monte Carlo model computes the generation of a stable pit using the concepts of embryo death and a critical embryo age in addition to embryo birth, the relationships between Ep and the embryo birth probability, 2, are more complex than that assumed for deriving eqns. (13). Thus, it is necessary to determine if the v1/2 and ln(v) relationships will be predicted by the Monte Carlo model.…”