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Showing 1 to 16 of 16 for “"Uniform Corrosion"”.
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Comsol Modelling of Uniform Corrosion of Used Nuclear Fuel Canisters
Uniform corrosion of copper can occur in spent nuclear fuel canisters placed in deep geological repositories (DGR). To estimate the minimum thickness for safe design of canisters, it is necessary to analyze the corrosion rate. Copper Corrosion Model (CCM) has been used to model the corrosion …
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Influences of Water Chemistry and Flow Conditions on Non-Uniform Corrosion in Copper Tube
… factors that can perpetuate certain types of non-uniform pitting corrosion in copper tube, specifically in waters with high chlorine and a high pH. These two parameters can further act synergistically to alter pitting propensities in copper pipes subjected to this type of water. A preliminary …
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A Method to Assess the Reliability of a Structural Frame System Subjected to Uniform Corrosion
<p>Corrosion of steel structures poses both financial and safety issues if not properly maintained. Even if proper maintenance techniques are followed, the cost can be substantial. In many industries, the current approach to determine the adequacy of structural components is based on visual …
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Non-Uniform Copper Corrosion in Potable Water: Theory and Practice
… been known that water flow can influence non-uniform corrosion of copper pipe (Rushing 2002, Marshall 2004), it has never previously been considered a primary contributor to the problem. This work is the first to describe a fundamentally important phenomenon in aqueous non-uniform corrosion: …
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The behaviour of patch repaired & RFP strengthened reinforced concrete beams: an experimental investigation
… to investigate the effect of extent of simulated uniform corrosion on reinforced concrete beams that have been patch repaired and strengthened in flexure. The most widespread cause of deterioration of reinforced concrete structures is due to corrosion of reinforcement (Bentur et al., 1997). …
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Análise de fadiga nas armaduras de tração de dutos flexíveis considerando efeitos da corrosão marinha
… rupture, annulus flooding and tensile armours corrosion by seawater. Integrity assessment in this type of occurrence is usually limited to a reassessment of the fatigue life considering the new annulus conditions, possibly conservatively estimating some armour damage. The objective of this work …
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Insights Into Non-Uniform Copper and Brass Corrosion in Potable Water Systems
Non-uniform corrosion of copper and brass in potable water systems poses both economic and environmental problems associated with premature plumbing failures and release of metals. With respect to copper pitting corrosion, it was found that forensic testing (i.e., in pipe-loops) is the only …
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Advancing the Understanding of Water Distribution System Corrosion: Effects of Chlorine and Aluminum on Copper Pitting, Temperature Gradients on Copper Corrosion, and Silica on Iron Release
… evidenced by increased chlorine decay rates, non-uniform corrosion, and rising corrosion potentials. Temperature changes had been suspected to increase copper pitting frequency and copper release to drinking water. Experiments examined the effect of temperature gradients on copper pipe corrosion …
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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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Stress Corrosion Cracking of a Transformation Induced Plasticity Fe39Mn20CO20Cr15Si5Al1 High Entropy Alloy
Stress corrosion cracking (SCC) is a materials degradation phenomenon in which a susceptible material (metal) fails below its yield strength in a brittle manner because of the concomitant effect of a tensile load and a corrosive environment. After achieving a critical crack length, the component …
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Assessment of the corrosion behaviour of alloys 825 and 625 in stagnant seawater-effect of temperature and welding
… wellheads, risers and valves. The outstanding corrosion resistance of alloy 825 against general and localised corrosion attack is attributed to its high Ni, Cr and Mo content. However, corrosion failures of alloy 825 equipment have been observed in offshore environments. Alloy 825 has good …
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Thermomechanical behavior of advanced manufactured heat-resistant alloys and their weldments
… include isothermal low cycle fatigue (LCF), corrosion resistance, and elevated temperature strength. The data generated in this work plays a pivotal role in de-risking Gen3 CSP systems by identifying and validating suitable alloys for various subcomponents. The findings provide essential …
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Chloride Sulfate Mass Ratio (CSMR) and Nitrate Acceleration of Galvanic Lead- Bearing Solder Corrosion
Lead corrosion in premise plumbing systems from materials, such as lead pipes, soldered joints, and brass, can cause elevated lead in drinking water. This work examined mechanisms by which galvanic corrosion of lead solder:copper joints is accelerated by high chloride, low sulfate, and high nitrate …
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Flow Induced Failures of Copper Drinking Water Tube
… mechanisms that include concentration cell corrosion, cavitation, particle/bubble impingement and high velocity impingement. Concentration cell effects resulting from exposing different copper surfaces to different flow regimes created a strong electrochemical cell that caused rapid …
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Atmospheric Corrosion of Ag and Cu with Ozone, UV and NaCl
… electronics and are susceptible to atmospheric corrosion. They are also good corrosivity monitors used to evaluate aggressiveness of the environment. Unfortunately, laboratory exposure testing does not always represent field environments very well. Discrepancies between lab and field exposure …
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Biogenic acid corrosion of sewer concretes with different binders: in-situ and model studies, with advancement of the life factor prediction method
Biogenic Acid Corrosion (BAC) is the biodeterioration of concrete caused by biological and chemical activities of bacteria that grow in an acidic environment. Such environments are typical in sewer systems, which collect wastewater from households, industries, and urban and storm water runoff, and …