... but at different partial pressures of H₂S, balanced with CO₂ to a consistent total pressure. The potential was scanned until a defined anodic current density was achieved, and then reversed to yield insight with respect to the repassivation behavior. The forward scans in many cases showed...

... as surface analysis, were conducted under simulated shallow and deep-sea environment. Under shallow conditions, the SCC susceptibility of both alloys was almost the same because of consistent passivation and repassivation performance of the passivating film. However, under deep-sea conditions, SCC...

...Blake Thornley; Robert Beadling; Michael Bryant; Anne Neville A thorough investigation into the repassivation process of CoCrMo in multiple simulated biological environments has been undertaken, looking in detail at both the kinetics and composition of the reformed oxide film. Specific focus...

...Siavash Jafarzadeh; Ziguang Chen; Florin Bobaru This article introduces repassivation and salt film formation models in a peridynamic formulation for corrosion damage. The model leads to autonomous generation of lacy covers in pitting corrosion and development of secondary pits. It does not require...

...J. Srinivasan; R.G. Kelly A quantitative framework examining the Galvele pit stability criterion in the context of repassivation using information from experiments on 1D stainless steel artificial pit electrodes and mass transport modeling is discussed. The framework is built principally upon three...

... are generally used for solution-chemistry effects on localized corrosion initiation and repassivation: the critical pH and the critical concentration of metal-anion complexes. The paper discusses the results of different experimental and modeling approaches in understanding local chemistry changes during...

.... Cerium acetate is established as an effective inhibitor for aluminum alloy. Moreover, it enables the repassivation of the surface defects. The ability of repassivation was not observed in the presence of cerium chloride. ^‡ Corresponding author. E-mail: [email protected] . 27 10...

...Florent Bocher; John R. Scully The effects of limited remote cathode area on crevice corrosion propagation, repassivation, and anode site reorganization were investigated on AISI 316 stainless steel (UNS S31600) in 0.6 M NaCl at 50°C. Both multiple crevice assemblies and rescaled coupled multi...

...Jayendran Srinivasan; Robert G. Kelly Studies on the critical conditions describing pitting stability and repassivation have focused on either determining the dissolution flux and solution chemistry or the potential. Experimental and modeling techniques toward building a quantitative relationship...

... it to pass a much higher current during the galvanic phase of the treatment. The data collected fits better with the acidification/pit realkalization model for corrosion monitoring of steel in atmospheric concrete, rather than the pitting potential/repassivation potential model used frequently...

... independent of molybdenum content, while the repassivation potential is strongly dependant on the molybdenum content. This indicates that chromium plays a strong role in maintaining the passivity of the alloy, while molybdenum acts to stabilize the passive film after a localized breakdown event. Nickel...

...) on Ni-based alloys containing different amounts of Cu, Pd, Mo, Fe, and Cr. The localized corrosion behavior, as exhibited by the breakdown and repassivation potentials, improved as the Cu content decreased from 30 wt% to 5 wt% for both as-cast and homogenized Ni-Cu alloys. The addition of Mo up to 10 wt...

...J.S. Kim; P.J. Xiang; K.Y. Kim This study examines the effect of alloying elements of Ni and W on the repassivation properties of stainless steel (SS) as evaluated by a rapid scratching electrode technique and stress corrosion cracking (SCC) test. The SS specimens were grouped into two different...

...J.W. Park; V. Shankar Rao; H.S. Kwon Effects of nitrogen on the repassivation behavior of Type 304L (UNS S30403) alloy in a sodium chloride (NaCl) solution at 25°C were investigated using a rapid scratched-electrode technique. The repassivation rate was faster in the alloy with nitrogen (0.1 wt...

...L. Li; A.A. Sagüés The effect of specimen surface area (S), varied by 3 orders of magnitude, on the pitting and repassivation potentials of concrete reinforcing steel specimens in alkaline solutions was determined using the conventional cyclic polarization technique. For most of the conditions...

... promotes the pitting phenomena. Potentiostatic current transients obtained from the moment just after interrupting the abrading action revealed that the repassivation rate of the pipeline steel is reduced. At the same time, the pit growth rate of the pipeline steel is increased with decreasing solution pH...

... surface smoothness effectively elevated E_p values. The repassivation potential (E_r) also showed certain variability, but it was insensitive to steel surface conditions and solution compositions. E_r was instead a strong function of the severity of corrosion attack...

... the pitting corrosion resistance of Fe-Cr-3%Al alloys. The repassivation potential of crevice corrosion of Fe-Cr-3%Al alloys was higher than that of Fe-Cr alloys up to a Cr content of 16%, but it was reversed at a Cr content of 18%. Auger electron spectroscopy (AES) analysis indicated that Si was concentrated...

...C.S. Brossia; G.A. Cragnolino Environmental conditions under which localized corrosion of carbon steel could take place in simulated groundwater were examined. Using specimens with crevices, it was determined that at potentials above the repassivation potential, the ratio of the chloride...

... corrosion critical crevice temperature critical pitting temperature cyclic polarization passive layer pitting corrosion repassivation Pitting and crevice corrosion of metals and alloys are a major cause of failure in chemical processing, desalination plants, pulp bleach plants, scrubbers...