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Showing 1 to 20 of 75 for “"Corrosion rates"”.
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Study of geometry effects on local corrosion rates for Lbe loop
Corrosion is an extremely important issue in nuclear cooling system applications. Many scientific and engineering efforts have contributed to the research of finding an ideal material, which has resistance to corrosive Lead Bismuth Eutectic (LBE). A Delta Loop was designed and constructed in Los …
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Corrosion rates and the time to cracking of chloride contaminated reinforced concrete bridge components
… phases. The second phase of the model, the corrosion phase, is the focus of this study. During the corrosion phase, chloride ion concentration reaches a threshold level at the depth of the reinforcing steel which initiates corrosion. The corrosion continues until sufficient pressure is …
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Service Life Assessment of Harbor Structures - Case studies of chloride ingress into concrete and sheet piling corrosion rates
… in the marine environment mainly consists of corrosion of the reinforcement due to chloride ingress. When the chlorides have passed through the concrete cover and reached the reinforcement, the passivating protection of the rebars is lost and the corrosion processes starts. When designing new …
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Corrosion of steel in the marine splash-zone.
The effect of the marine splash-zone on corrosion rates of steels BS 4360 43A and 50D, Corten A and pure iron was assessed. Specimens were exposed at coastal and deep water sites as well as being subjected to splash-zone simulation in the laboratory. Gravimetric, microscopic and a variety of …
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High-temperature corrosion study of alloys in molten MgCl₂-KCl eutectic salt
… properties. This research investigates the corrosion behavior and protection strategies of Haynes 230 (H230), Incoloy 800H (800H), and Stainless Steel 316 (SS316) in MgCl₂-KCl molten salt at high temperature. First of all, the corrosion rates of different alloys are determined by performing …
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Corrosion Behavior of Nuclear Waste Storage Canister Materials
… steel containers and accelerate the oxidation (corrosion) of steel. It is of interest to identify if pertechnetate anions pose a corrosion hazard to the mild steel nuclear waste storage tanks, under the conditions of the storage sites, as that can accelerate the degradation of the tanks and lead …
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The Influence of Water Chemistry on H2 Production and Uptake during Anaerobic Iron Corrosion
Iron corrosion is the most important economic and aesthetic problem facing utilities. In the water distribution system, problems caused by iron corrosion include "red water", scale buildup, and pipe failures. It is necessary to improve our mechanistic understanding of anaerobic iron corrosion in …
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Assessment of In-situ Corrosion Conditions at Nevada Mechanically Stabilized Earth Wall Sites: Using Electrochemical Soil Characteristics and Linear Polarization Resistance
… using metallic reinforcements (Thornley 2009). Corrosion of metallic elements a naturally occurring electrochemical process is irreversible an inevitable. The rate of metal loss (corrosion) is a function of the environmental conditions and metal type. For MSE walls key parameters include the …
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Corrosion Behavior of ASTM A1010 Stainless Steel for Applications in Bridge Components
… of this research was the investigation of the corrosion behavior of a low chromium-content stainless steel, ASTM A1010, for use in steel bridge members. This stainless steel has been marketed as a potential replacement for conventional structural steels for bridges located in highly-corrosive …
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The development of empirical chloride-induced corrosion rate prediction models for cracked and uncracked steel reinforced concrete structures in the marine tidal zone
Empirical chloride-induced corrosion rate prediction models for cracked and uncracked reinforced concrete (RC) structures in the marine tidal exposure zone are proposed in this study. The data used to develop the models were obtained from parallel corrosion experiments carried out by exposing half …
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The Effects of Laser Shock Peening on the Residual Stress and Corrosion Characteristics of Magnesium Alloy AZ91D for use as Biodegradable Implants
… that are very similar to bone. However, the high corrosion rate of magnesium and its alloys while immersed in body fluid restrict the material from use as permanent implants. The ability to control the corrosion rate of a material is an important factor in the development of biodegradable …
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Performance of a penetrating corrosion inhibitor in controlling carbonation induced corrosion in reinforced concrete
Reinforcement corrosion in concrete remains the most serious cause of premature deterioration of concrete structures world-wide, and many methods have been proposed to combat this problem. One method of improving the durability of concrete in aggressive environments is the use of corrosion …
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The influence of copper addition on the corrosion behaviour of low nickel austenitic stainless steels
… as partial substitutes for nickel on the corrosion performance of three metastable austenitic stainless steels, in various microstructural conditions, has been investigated. These alloys (based on AISI 301), which are to be used essentially in forming applications, were developed to …
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Geležies dalelių sintezė vandens ir alyvos terpėse ir jų taikymas tribosistemose /
… decrease copper ions reduction reaction rate. Corrosion rates of iron particles in rapeseed and SAE 10 mineral oils were studied. It was found that corrosion rates of iron particles in oils correlate both with size distribution of iron particles and whole composition of produced suspensions. …
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Laboratory test methods for the determination of the corrosion of metals in tallol at high temperatures
An investigation of the factors affecting the corrosion rates of metals in hot tallol was undertaken to answer questions raised by previous investigators. The items studied were as follows: 1. The change in composition of tallol on heating was determined by heating tallol at 300° C. for 48 hours, …
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Evaluation of the effectiveness of deep polymer impregnation as a corrosion abatement technique for overlaid bridge decks
The focus of this research was primarily on corrosion of the reinforcing steel (rebars) in bridge decks. It has been estimated that over $20 billion is required to repair or rehabilitate corrosion induced deficient bridge decks and that the cost is rising at the rate of $0.5 billion annually. …
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Corrosion characteristics of seven metals in three aqueous environments for forensic applications
Corrosion characteristics of seven varieties of metals—zinc, brass C260, stainless steel 302, stainless steel 316, stainless steel 420, stainless steel 430, and stainless steel 440—in three aqueous media—Atlantic Ocean, Charles River, and deionized waters—were assessed via mass loss methods over 32 …
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Corrosion Behaviors of Coated Aluminum Alloys in Simulated Corrosive Environment
<p>This study investigated the corrosion of an aluminum alloy with and without coatings under simulated corrosive environments. Coatings were selected and applied from commercial materials and techniques, consisting of microceramic, epoxy primer, and topcoat. The experiments for coated specimens …
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Corrosion of high-chromium and conventional steels embedded in concrete
Corrosion of steel in concrete structures sometimes led to the unexpected failure of the concrete bridges in United States before their intended service life. High-chromium steel has been developed as a replacement for conventional steel in concrete because it may have a capability to retard the …
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Real time nanogravimetric monitoring of corrosion in radioactive environments
… and understanding the mechanism of metal corrosion throughout the nuclear fuel cycle play a key role in the safe asset management of facilities. They also provide information essential for making an informed choice regarding the selection of decontamination methods for steel plant and …
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