... of Mo and Cr on pitting resistance. SSC SSRT RSRT H₂S Cyclic polarization corrosion martensitic stainless steel INTRODUCTION Ripple and slow strain rate test Continuous high demand for energy resources in recent years has led to a proliferation of oil and gas production wells around...

... has been developed to provide improved strength up to 125ksi and higher pitting resistance while maintaining a tempered martensitic microstructure with low delta ferrite content and no detrimental phases or precipitates. Improvement of pitting resistance has been assessed through cyclic polarization...

...cost effective material HPHT wells high strength grade supermartensitic S13Cr Duplex Stress Corrosion cracking sulfide stress cracking pitting cyclic polarization INTRODUCTION The combination of targeted performances of the new alloy: - 110 or 125ksi High Yield strengths - higher...

... of the experiments were conducted using cyclic potentiodynamic polarization (CPP) on neat chemicals and verified using long-term neat chemical exposures (90 day) to various materials to verify the CPP results. Localized corrosion inhibition synergistic additives cyclic polarization INTRODUCTION Neat chemical...

...Abstract This study focuses on a better understanding of pitting and crevice corrosion on coating surface damaged carbon steels in automotive applications. Immersion and cyclic polarization tests were conducted on bare and coated metals in a 5% NaCl solution. The morphology of localized corrosion...

... from cyclic polarization could be also implemented to evaluate the compatibility with SS304.¹ The purposes of this study is to confirm, for the same chemicals and metallurgies, that electrochemical impedance spectroscopy (EIS) could be used as a quick and effective tool to investigate...

... temperature (up to 250 °C) and CO₂ partial pressure (up to 100 psig) in a static autoclave reactor under different salinity conditions. Electrochemical technique cyclic polarization was used to evaluate the potential of pitting corrosion of different alloys. A methodology to apply vertical scanning...

...Early galvanostatic and later potentiostatic polarization tests began to provide some elucidation of the mechanism of localized corrosion. Experience and equipment improvements allowed these techniques to be standardized as the ASTM G61 Cyclic Polarization tests. ³...

... is exfoliation, while non-sensitized alloys tend to pit. This study attempts to find correlation of corrosion mode to cyclic polarization data by comparison with ASTM G66 and ASTM G67 accelerated tests data. 5xxx aluminum alloys sensitization ASTM G66 ASTM G67 electrochemistry cyclic polarization...

... and are presented in the text below. EXPERIMENTAL Several tests were conducted in order to elucidate the details of the localized corrosion mechanism: potentiodynamic sweep, cyclic polarization (or cyclic voltammetry), self-passivation and depassivation tests. The first three test methods were used to investigate...

... was used for each specimen. sensitization stainless steel potentiodynamic polarization cyclic polarization reactivation INTRODUCTION A standard cathodic-to-anodic sweep was performed. The sample was allowed to rest at its open circuit potential (OCP) for some period of time with no external potential...

... inhibition crevice corrosion repassivation potential cyclic polarization The aim of the present work was to establish the effect of the fluoride ion on the chloride induced crevice corrosion of Alloy 22 at 90°C. EXPERIMENTAL PROCEDURE Alloy 22 can be considered not susceptible to pitting corrosion...

... in solution. Alloy 22 crevice corrosion inhibition corrosion potential breakdown potential repassivation potential cyclic polarization sulfate chloride temperature INTRODUCTION Alloy 22 (UNS N06022) is a nickel alloy rich in chromium and molybdenum. It possesses a high degree of corrosion resistance...

... is highly resistant to general and localized corrosion in pure fluoride solutions. Thermal aging is not detrimental and even seems to be slightly beneficial for general corrosion in alkaline solutions. N06022 fluoride pitting corrosion crevice corrosion transpassivity thermal aging cyclic polarization...

... mechanically finished with 600 grit size abrasive paper. Before testing, they were cleaned with acetone and rinsed with distilled water. RESULTS AND DISCUSSION 1 M NaCl solutions Figures 1 - 2 show typical cyclic polarization curves for Alloys 22, 59 and 686 and for Alloys 2000 and 625, respectively in 1 M...

... in the various systems. Alloy 22 was found to be resistant to localized corrosion in the simulated ground waters tested. Alloy 22 corrosion resistance electrochemical behavior open circuit potential (OCP) oxygen evolution potential cyclic polarization simulated acidified water (SAW) simulated concentrated...

...Abstract Reinforcing steel bars (~12mm diameter and 150mm long) were used in cyclic polarization tests in saturated Ca(OH)₂ solution and simulated concrete pore solution (SPS) with various levels of sodium chloride addition. Below a limiting chloride level (~0.004M [Cl...

...cast iron corrosion inhibition nitrites carboxylates cyclic polarization INTRODUCTION In heavy duty diesel cooling systems, cast iron corrosion and specifically cylinder liner cavitation corrosion have long been concerns. Historically protection against cast iron corrosion has been provided...

..., and on those of electrochemistry for measuring the bulk electronic current, i.e. corrosion current of metallic samples in aqueous solutions. An early stage of pitting corrosion of aluminium and copper in seawater was monitored in situ by the optical corrosion-meter during the cyclic polarization test...

...Ozone in Seawater Abstract The corrosion resistance of austenitic stainless steels in artificial seawater containing 0.2 to 0.4 mg/L dissolved ozone was investigated. According to cyclic polarization data, UNS S30400 and S31600 stainless steels are resistant to pit initiation after 8 weeks...