... papers up to 600 grit. Prior to the cyclic potentiodynamic polarization test, the OCP of the material in the test solution was recorded during 60 min. The electrochemical tests were conducted using a typical 3-electrode arrangement including a KCl-saturated Ag/AgCl reference electrode, a TiO₂...

.... Additionally, testing was performed to differentiate between the contribution from the halides (i.e., chloride and fluoride) in the pitting factor (PF) equation since we have only been focusing on chloride. Cyclic potentiodynamic polarization (CPP) was used to identify regions of localized corrosion...

... drilling environments has been investigated. Cyclic potentiodynamic polarization and slow strain rate tests were used to characterize the pitting and stress corrosion cracking resistance of the additively manufactured alloy UNS N07718 in high chloride-containing solutions at elevated temperatures. UNS...

...Besides the use of PRE and CPT, electrochemical methods including cyclic potentiodynamic polarization and electrochemical noise (EN) have been extensively used in the laboratory to determine the expected pitting corrosion resistance of stainless steels during service. EN, in particular, offers...

... hot corrosion hot corrosion nickel-chromium binary alloys salt drip DC electrochemistry resistance polarization cyclic potentiodynamic polarization sodium chloride sodium sulfate The anodic and cathodic tafel slopes (β_a & β_c) were obtained using the cyclic...

... polarization cyclic potentiodynamic polarization potassium chloride potassium sulfate INTRODUCTION Table 3 Summary of electrochemical results for testing under 1 vol% SO₂ – air blend (g) at 700±5°C Alloy OCV (V) R_p (Ω*cm²) β_a (V) β_c (V) β...

... of the E_corr measurement, cyclic potentiodynamic polarization tests (CPP) were conducted as per ASTM G-61 ²⁰ , from -250 mV below E_corr at a scan rate of 0.167mV/s in the forward direction. The scan direction was reversed at +1100 mV (versus SCE) or 5 mA/cm² (whichever...

... alloy UNS N07718 has been evaluated by means of electrochemical methods including cyclic potentiodynamic polarization tests and electrochemical noise measurements, and exposure tests in chloride-containing solutions. pitting heat tints cyclic potentiodynamic polarization electrochemical noise alloy...

... to 100000 Hz. Cyclic potentiodynamic polarization measurements were conducted starting from -250 mV (vs. corrosion potential), scanned towards more positive direction, and the potential sweep rate was 0.5 mV/s. When the current reached 1 mA/cm², reversed the scanning direction. Each type...

.... To determine the pitting susceptibility under different environment and how long the pitting will appear, cyclic potentiodynamic polarization and immersion experiments were carried out in this work. Abstract With development of oil and gas exploitation in deepwater, more and more stainless steels have been...

... electrochemical impedance spectroscopy cyclic potentiodynamic polarization ASTM A-36 Steel INTRODUCTION The introduction of alternative fuels into transportation/conveyance systems designed for petroleum and gas service has led to new material compatibility issues. Challenges that relate to the safe...

...stainless steel hydraulic fluids corrosion cyclic potentiodynamic polarization INTRODUCTION In February 1999, the Schiehallion Oilfield, located 150km West of Shetland was shut down only seven months after production began, which was not the first case of the open loop hydraulic systems failing...

... in electrochemical testing protocol with time are reviewed. Comparative data is presented addressing test environments, scan rates, statistical replication, alloy response, and acceptance criteria. ASTM F 2129 pitting corrosion cyclic potentiodynamic polarization in vitro testing INTRODUCTION The human...

... to detect a range of potential and environmental conditions that may promote stress corrosion cracking as a screening test prior to conducting slow strain rate tests. We used cyclic potentiodynamic polarization tests as a faster and nondestructive electrochemical method to detect potential stress corrosion...

...The experimental setup for cyclic potentiodynamic polarization (CPP) testing is shown in Figure 2 . The open circuit potential (OCP) was allowed to stabilize at testing temperature for approximately one to three hours prior to polarization. Electrolytes were subjected to natural aeration...

... approached or exceeded experimentally determined Cr (Mo, Ni) transpassive potentials. alloy 625 alloy 22 nuclear waste containment crevice corrosion chloride critical crevice potential repassivation potential cyclic potentiodynamic polarization INTRODUCTION The Yucca Mountain Site Characterization...

...Abstract The phenomenon of pitting in carbon steel exposed to alkaline solutions of nitrate and chloride was studied with the cyclic potentiodynamic polarization technique. Open-circuit and pitting potentials were measured on specimens of ASTM A537 carbon steel in pH 9.73 salt solutions at 40°C...

... chloride concentration and temperature using cyclic potentiodynamic polarization and lead-in-pencil potential step test methods. At intermediate Cl^- concentrations, e.g., 0.028-0.4 M, the repassivation potential of alloy 625 is greater than that for alloy 825 and is dependent on the Cl...

...Abstract Development of the cyclic potentiodynamic polarization (CPP) technique and interpretation of the resulting curves was based primarily upon the stainless steel-aqueous chloride system. This paper presents and interprets CPP curves for this and other alloy-environment systems...

...Abstract Cyclic potentiodynamic polarization scans were conducted to determined the effectiveness of various combinations of anodic inhibitors in the prevention of pitting in carbon steel exposed to dilute radioactive waste. Chromate, molybdate, and phosphate were investigated as replacements...