..., yet related, driving forces applicable to the process, namely the potential and temperature. This study sought to establish the relationship between the pitting potential from ASTM G61 and critical pitting temperature from ASTM G150, both of which are determined as the driving force, potential...

... (quenched and tempered). The anodic potentiodynamic polarization curves of prestressing steel specimens in aqueous suspension of portland cement CEM I (pH = 12.7) with 0.0001…1.0 M [Cl^-] were traced with a scan rate of 0.556 mV/s. The passivity breakdown (pitting) potential of steel...

...martensite-based stainless steel for OCTG austenite volume ratio corrosion potential rest potential open-cut potential pitting potential INTRODUCTION This paper reports from the electrochemical point of view that the austenite ratio has little impact on corrosion resistance in higher Cr-added...

...% and 12 wt%, acetic acid range 50-600 ppm, temperatures in the range 100° C - 175° C and partial pressure of CO₂ was 10bar. Pitting potentials (E_pit) were extracted from cyclic polarization tests. The ANN was used to process the experimental results and to predict pitting potentials...

... without inhibitors) Pitting resistance SSC resistance 17Cr OCTG seamless pipe martensitic-ferrite stainless steel SSC sulfide stress cracking high temperature strength corrosion rate pitting potential INTRODUCTION As is well known in seamless OCTG materials, L80-13Cr ¹...

....) in actual seawater decreased as the pitting resistance equivalent (PRE) of the materials became higher, the C. C. O. R.s varied depending on the manufacturing methods of the materials (rolled or cast). The pitting potential in artificial seawater correlated with the C. C. O. R.s in the Middle Eastern seas...

... are included as well. In cases where fabrication defects compromise the corrosion resistance, it is our intention to illustrate the consequences and discuss available methods for re-establishing the surface. STANDARDS TO SPECIFY AND RE-ESTABLISH SURFACE REQUIREMENTS Corrosion testing CPT pitting potential...

...Abstract Pitting potentials (E_p) of super duplex stainless steel (SDSS) grade (UNS S32760) were determined using potentiodynamic polarization methods. The effect of chloride concentration on E_p was determined at 130°C in an autoclave at various chloride ppm levels (15, 100...

... in any one test. Acknowledgments TABLE 3 Test matrix and pitting potentials (mV SCE) for as-extruded pipe Temperature, °C Chloride Concentration, mg/L 500 5,000 50,000 10 1000 726 505 15 693 20 580 476 271 40 463 270 222 60 377 206 70 80 387 163 -5...

... (to great deal) due to the lack of standardized testing techniques and so direct comparison of different datasets is difficult. Ericsson et al have published pitting potential data for AISI 316 that emphasizes the importance of pickling subsequent to abrasive treatment in order to improve resistance [ 1...

... in the anodic direction at 20 mV/min to generate an anodic polarization curves up to an anodic current density of about 500 μA/cm². The potential corresponding to a current density of 100μ A/cm² was designated as the pitting potential (Vc’₁₀₀...

... to noble (about -200mV vs. Ag/AgCl). But, it was still less than the pitting potential of type 316L (+300mV vs. Ag/AgCl). Effect of chlorine concentration on the corrosion potential in seawater is shown in Figure 6 . Corrosion potential has shifted towards the noble direction as a result of an injection...

... was formed at tempering period and its volume was affected by tempering temperature. The rest potential and the pitting potential for modified 13% Cr steel pipe were independent of the retained austenite content. There is no harmful influence of retained austenite observed on corrosion resistance and pitting...

... is above the pitting potential value, which depends on the chloride concentration and the pH of the pore liquid near the steel surface. Cathodic prevention improves the corrosion resistance of the rebars by maintaining the steel potential E below the pitting potential E_pit...

... the pit nucleation potential when molybdenum is present. Results using the potentiostatic cyclic thermometry technique have shown that the critical pitting potential is a linear function of the pitting resistance equivalent (PRE) and strongly dependent on both Mo and N concentration in the alloy. high...

...localized corrosion stress corrosion cracking repassivation potential corrosion potential pitting potential sensitization stainless steel nickel base alloy 316L alloy 825 INTRODUCTION The use and limitations of various corrosion and stress corrosion cracking (SCC) test techniques have...

.... The performance of corrosion resistant alloys was evaluated for the higher chloride concentrations in the FGD Plant. Pitting corrosion Pitting potential Crevice corrosion Stainless steel Ni base alloy FGD Plant INTRODUCTION For the control of air pollution, various flue gas desulfurization (FGD) processes...

... and deionized water prior to each measurement. The pitting potentials, V_C,PIT's, of the carbon steel in each solution were measured potentio statically. The potentio stat used in this study was model HA-151 by HOKUTO DENKO Ltd. The following steps were taken to form I₂ electrolytically...