...admixture corrosion inhibitor polarization resistance ASTM G180 X-Ray Photoelectron Spectroscopy (XPS) Electrochemical Impedance Spectroscopy (EIS) INTRODUCTION Corrosion is one of the primary concerns in the durability of materials and structures. Research efforts have been made to find...

... that a polarization resistance (R_p) higher than 10000 Ω.cm² determined from the impedance diagram (polarized at 200 mV vs. open circuit potential (OCP)), suggested a high resistance of the passive film. Flags about the presence of pits were suggested by a R_p value lower than 10000...

... and API 5L X70 linepipe steels by these bacteria. Electrochemical techniques including open circuit potential (OCP), polarization resistance (PR), and electrochemical impedance spectroscopy (EIS) evaluate electrochemical properties of the steel-solution interface. Scanning electron microscopy (SEM...

...Abstract CO₂ corrosion behavior and atomic processes at the corroding interface of a high strength low alloy tempered martensite tubular steel were investigated for 177 h at 70 and 80 °C using electrochemical and surface evaluation techniques. Linear polarization resistance (LPR...

... seconds at the start of the sweep. In both laboratories, the potential range between -5 mV and 5 mV was used to calculate the polarization resistance. RESULTS AND DISCUSSION Abstract Cast nickel aluminum bronze has been used extensively in some components in seawater systems because of its generally...

... can explain why the cathodic overprotection produced more positive corrosion potentials. soil corrosion soil moisture soil resistivity cathodic protection cathodic overprotection corrosion potential corrosion rate Tafel extrapolation polarization resistance cathodic protection standard...

...Abstract Corrosion rates of carbon steel in Duluth-Superior Harbor (DSH) were measured over a 3-year period using weight loss, pit depth measurements and linear polarization resistance (LPR). Corrosion coupons were placed in racks throughout the harbor and removed periodically for weight loss...

... on the corrosion of metals in wood extracts are presented. wood wood extractives tannins fastener polarization resistance steel galvanized steel alkaline copper quaternary (ACQ) chromated copper arsenate (CCA) pH INTRODUCTION Historically, the most common wood preservative for residential construction...

... that of the metal substrate as coated steel in general, the two equivalent circuits can be separated from each other. Thus the polarization resistance of metal substrate was determined by separating the measured paint film impedance from the metal substrate impedance. Electrochemical parameters can be measured...

... and the traditional R_p and its correlation with gravimetric tests. Abstract Polarization Resistance is now a routine technique well demonstrated to be able to measure the gravimetric loss due to corrosion in the majority of the electrolyte/ metal systems. Until now the determination of R_p has...

...-extract method to examine corrosion of carbon steel and galvanized steel on untreated southern pine, as well as southern pine treated with five different wood preservatives. wood fastener polarization resistance steel galvanized steel alkaline copper quaternary (ACQ) chromated copper arsenate (CCA...

... behavior of the repairs was done through the linear polarization resistance technique (Rp) and the corrosion potential by a commercial corrosometer. After over four years of exposure, ZnO is the only inhibitor that shows a clear passivation (E_corr <-200 mV and an i_corr of <0.2...

... treated wood correlate well with gravimetric data in solid wood. wood fastener polarization resistance galvanized steel alkaline copper quaternary (ACQ) INTRODUCTION EXPERIMENTAL Full details of the procedure, and a discussion thereof have been accepted for publication elsewhere ²²...

... could be achieved if the extent of corrosion could be continuously monitored in-situ. Bogaerts and coworkers ¹⁰ have recently developed a new technique, known as electrochemical frequency modulation (EFM) that holds the promise of simultaneous determination of the polarization resistance...

...Abstract The estimation of corrosion current in field applications is mostly based on the Stern-Geary relationship and direct measurement of the polarization resistance R_p mainly with the linear polarization resistance technique but also with the electrochemical impedance technique...

... the corrosion rate of steel in concrete containing chloride ions. The techniques used were measurement of open-circuit potential, Tafel plot, polarization resistance and AC impedance. The effect of concrete quality, cover depth thickness, cracking in concrete, and polypropylene fibers was studied. The corrosion...

... of the applied voltage. However, the technique highlighted changes in the corrosive environment and changes in the corrosion mechanism, indicating that it has potential as an online monitoring technique. electrochemical frequency modulation polarization resistance corrosion rate copper-nickel seawater UNS...

... measurements were carried out in oil-brine mixtures to determine polarization resistance R_p values, using three nominally identical electrodes in a flow-loop cell so as to approach in-situ monitoring conditions. The potential of the working electrode (WE) was controlled with respect to the reference...

... products can then lead to rust staining followed by concrete cracking, and spalling. Currently the condition of the steel is usually assessed primarily by monitoring half-cell potentials or by conducting polarization resistance tests from which corrosion rates can be determined. In addition, current flow...

... alkalinity, microorganisms population, as well as the metal surface damage. At the same time, the corrosion rate was determined using two electrochemical techniques: Polarization Resistance (PR) and Electrochemical Impedance Spectroscopy (EIS).; According to the results, it was observed that the protection...