2 edition of study of erosion-corrosion with the rotating cylinder electrode found in the catalog.
study of erosion-corrosion with the rotating cylinder electrode
Written in English
|Statement||by Siluo He.|
|The Physical Object|
|Pagination||xii, 60 leaves, bound :|
|Number of Pages||60|
Standard Practice for Evaluating and Qualifying Oil Field and Refinery Corrosion Inhibitors Using the Rotating Cylinder Electrode Active Standard ASTM G | Developed by Subcommittee: G Book of Standards Volume: A mini-flowloop was developed to study CO2 corrosion and corrosion/erosion interactions, and to assess the effectiveness of inhibitors under conditions that simulate multi-phase pipelines. The miniflowloop was used to study the effect of testing time, steel chemistry, velocity, temperature, fluid chemistry, sand and inhibitors on corrosion rates.
might have a significant impact on erosion-corrosion. Further work on characterization of the new electrode involving erosion-corrosion measurements is in progress. KEY WORDS: erosion-corrosion, flow, rotating cylinder electrode INTRODUCTION Single-phase flow affects corrosion in a number of ways. When bare metal surfaces corrode, the effect ofCited by: A Rotating Ring Disc Electrode (RRDE) is used for the quantitative and qualitative identification of species dissolving on the disc shaped working electrode. A Rotating Cylinder Electrode (RCE) provides a uniform shear stress on the cylindrical surface.
The synergistic effects of fluid flow, sand particles, and solution pH on erosion-corrosion of AISI steel alloy in saline-sand medium were studied through a rotating cylinder electrode (RCE) system by weight-loss and electrochemical measurements. The worn surface was analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).Cited by: 1. The effect of erosion speed on the interaction between erosion and corrosion of the Fe– wt% B alloy in a flowing zinc bath has been investigated using a rotating-disk technique. The total erosion–corrosion rate increases rapidly, whereas the pure erosion rate tends to increase linearly with an increase in erosion speed and with low by: 3.
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The rotating cylinder electrode (RCE), which has developed as a compact, hydrodynamic electrode since the s, is not as well-known as the rotating disc electrode (RDE) which normally provides controlled mass transfer in laminar flow for electrode kinetic Size: 9MB.
Another method involves electrochemical noise (EN) measurement, which has been used by Galvan-Martinez et al. to study the effect of turbulent flow on the corrosion of API X60 in seawater by employing two rotating cylinder electrodes.
Statistical methods were used to analyze the EN, indicating that the rate of the observed localized corrosion increased as a function of rotation rate, particularly under Cited by: At very slow rotation rates, the solution near a rotating cylinder flows with a regular and smooth motion called laminar flow.
As the rotation rate increases, the solutio n flow becomes more complex. While the layer of solution in direct contact with the cylinder continues to cling to the surface, the shear stress between this layerFile Size: KB.
Electrochemical Study of UNS S Super Duplex Stainless Steel Corrosion in Turbulent Seawater Using the Rotating Cylinder Electrode G. Kear 1 Erosion-Corrosion Group, Division of Mechanical Engineering, The University of Queensland, Brisbane QLDby: The rotating disc/cylinder electrode system is widely used in the study of flow-accelerated corrosion (FAC) and erosion-corrosion since due to.
The study by experimental design is conducted using a rotating cylinder electrode (RCE) to induce the E–C damage. The contribution and statistical significance of each study parameter in the wear process are determined and the significant interactions are characterized by contour by: 6.
Electrochemical measurements were carried out on a rotating cylinder electrode system which has been identified as a suitable tool for the study of aqueous erosion–corrosion and the determination of its constituent components and controlling mechanisms, as shown schematically in Fig.
(It is acknowledged that estimating the actual impact velocity and the impact angle is difficult in Cited by: Study of the Effect of Inhibitors on Erosion-Corrosion in CO2-Saturated Condition with Sand Authors Chun Wang (U. of Experiments were conducted using a rotating cylinder electrode cell containing sand at different temperatures, rotational speeds and with various inhibitor concentrations.
n, Texas: NACE Press Cited by: 4. A rotating cylinder-collector electrode (RCCE) for the study of electrochemical processes that involve electroactive intermediates and/or products is described.
Fig. 1 shows the diagram of a device fabricated for the laboratory studies, consisting of a cm 3 glass reactor with a temperature bath.
A type stainless steel cylinder with a cm diameter and a length of 11 cm was used as a cathode. In order to show the effect of plates and concentric cylinder devices used as counter electrodes in the RCE mass transport characterization, Cited by: Studies are conducted on carbon steel, using a hydrodynamically smooth-rotating cylinder electrode in turbulent flow at K.
The pure corrosion rate and erosion rate of carbon steel in the fluids free of nanoparticles are, respectively, higher Cited by: In order to control the turbulent flow conditions, a Rotating Cylinder Electrode (RCE) was used.
Five different rotation rates were studied: 0 (or static conditions), and rpm. The substrate was machined in a cylinder form with a diameter of 16 mm and a length of 5 mm.
The cylinder was adopted to be the rotating cylinder electrode (RCE). The RCE specimen with an exposing area of cm 2 was used as a cathode.
A platinized titanium mesh with a dimension of 25 mm × 35 mm was used as an by: The rotating cylinder electrode has practical applicability as a corrosion prediction tool for liquid flow.
All that are needed are the appropriate relationships to interface different geometries. A review is presented of the relationships between mass transfer coefficient, fluid velocity, shear stress, and fluid properties in four by: Of the laboratory devices available for examining the effects of single-phase fluid flow on corrosion, the rotating cylinder electrode is probably one of the simplest devices to construct and operate under defined hydrodynamics in the turbulent flow by: This study provides information on the performance of three stainless steels at various shear stresses and presence of silica sand particles in simulated mine water.
The materials employed were two duplex stainless steels (UNS S and UNS S) and one austenitic stainless steel (UNS ). The rotating cylinder electrode system produced shear stresses to evaluate the flow Author: A.
Moloto, M. Seshweni, N. Mathe, B. Obadele, S. Aribo, S. Aribo, P. Olubambi, O. In the past, erosion-corrosion under disturbed flow conditions has been studied experimentally in flow loops and numerically by performing flow simulations.
In this study a new, compact experimental setup was tested, intended for study of erosion-corrosion under disturbed flow conditions, involving a rotating cylinder geometry with a sudden step. The Rotating Cylinder Electrode for Examining Velocity-Sensitive Corrosion—A Review. Silverman 1 Argentum Solutions, Inc., Chesterfield, MO E-mail: [email protected] A rotating cylinder electrode study.
Materials and CorrosionOnline publication date: 1-Jul Erosion–corrosion Cited by: Fluid flow can affect the rate of corrosion.
The problem has been to determine when this effect occurs in equipment, especially before the equipment is designed.
A new velocity sensitivity test using a rotating cylinder electrode is being used for this purpose. The strength of the apparatus is its defined by: In this study, a new, compact experimental setup was tested, intended for the study of erosion-corrosion under disturbed flow conditions, involving a rotating cylinder geometry with a sudden step.
Careful consideration of the conditions required needs to be made before designing a rotating cylinder for the study of erosion corrosion.
The use of outer cylinder static electrodes has been determined, through mass transfer tests to be valid for a small annular gap of 5mm, allowing experiments to be set up in autoclaves that reproduce hostile.Rotating Cylinder Electrodes (coupled metals) +4 Variation of galvanic current density and couple potential with time of carbon steel coupled with aluminum in % NaCl solution at T= K & r.p.A Rotating Cylinder Electrode (RCE) system has been used to determine the corrosion kinetics of mild steel in the active dissolution potential range under erosion-corrosion conditions.
The hydrodynamics of the rotating cylinder electrode were characterized by the mass transfer controlled oxygen reduction reaction on a copper electrode. The anodic dissolution current was measured at various Cited by: