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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Erosion Corrosion"”.
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Erosion-corrosion mitigation using chemicals
… prevalent as wells age and this is leading to erosion-corrosion in C02-saturated conditions becoming a major mechanism of material attack. Its understanding, prediction and control are key challenges to sound facilities design. The use of carbon steel in conjunction with corrosion inhibitors in …
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Investigation of erosion-corrosion behaviour of pump materials
A novel erosion-corrosion approach, that expands the assessment of damage occurring on engineering materials subjected to a submerged impingement jet, has been developed. This new analytical method yields quantitative data that facilitates a substantially improved understanding of the material …
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Erosion - corrosion mechanisms of stainless steel UNS S31603
Solid particle erosion-corrosion is the wear caused by the combined action of the mechanical process of solid particle erosion and the electrochemical process of corrosion. This joint action leads to a synergistic interaction that enhances the wear rate of the material, causing severe problems to …
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Erosion-Corrosion of Cr3C2-NiCr High Velocity Thermal Spray Coatings
This thesis investigates the mechanisms of erosion-corrosion of Cr3C2-NiCr thermal spray coatings under high temperature, high erodent velocity, turbine conditions. Erosion-corrosion is a generalised wear phenomenon where the combined effect of each degradation mechanism generates more extensive …
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Erosion-corrosion resistance of tungsten carbide hard metals with different binder compositions
A study has been made of the slurry erosion resistance of a series of cemented tungsten carbides with different binder compositions consisting of combinations of cobalt, nickel and chromium. Testing was carried out on a specially designed laboratory rig in both tap and salt water using silica sand …
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Critical Erosion/Corrosion Piping Wall Thicknesses Under Static and Fatigue Stress Conditions According to ASME Guidelines
The purpose of this project was to show the updated procedures and to make additions to the computer program called Tmin designed by E. I. DuPont De Nemours and Company. This program is used as a screening tool for determining the largest of the minimum pipe-wall thicknesses in a piping system. …
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Interplay of Water Chemistry and Entrained Particulates in Erosion Corrosion of Copper and Nonleaded Alloys in Potable Water Systems
Erosion corrosion of plumbing materials in domestic water systems is a complex phenomenon driven by water quality, hydrodynamic and electrochemical factors. Erosion corrosion accounts for over a third of copper hot water system failures in the U.S., hundreds of millions in damage, and may be …
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Development of a Nano-Composite Coating Technology for Improvement of Carbon Steel Pipe to Erosion-Corrosion in Oil Sands Slurry
Erosion-corrosion (E-C) has constituted an essential threat to the integrity of oil sands slurry hydrotransport system. To improve the resistance of carbon steel pipes to E-C in oil sands slurry, a composite coating technology has been developed by electrolytic deposition in this research. …
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Effect of a Simulated Butterfly Valve on the Erosion-Corrosion Rate of Nickel Aluminum Bronze Alloys in Highly Turbulent Seawater
… and maritime applications for their excellent corrosion resistance under the influence of seawater. One application involves the use of a NAB butterfly valve within a NAB fluid line to control fluid flow of seawater. Due to the chaotic environment, the corrosion rate of the NAB tubing …
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Erosion-oxidation of mild steel in a fluidized bed environment
This thesis is a contribution to research into erosion-corrosion investigating the rapid wastage of in-bed heat exchanger tubing in fluidized bed combustors. Two main new areas of research were investigated; erosion-corrosion of mild steel in a temperature gradient and erosion-corrosion modelling. …
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Computational modeling of brittle impact erosion mechanisms
Materials are subjected to an erosion-corrosion environment in a wide range of applications today. Elevated temperatures promote the formation of oxide layers in jet engines. In fluidized bed boilers, the bed materials and piping of slurries and caustic materials cause erosion and corrosion. The …
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DETERMINATION OF THE SYNERGISM BETWEEN EROSION AND CORROSION IN POTASH-SAND SLURRY CORROSION OF CARBON STEEL
Erosion-corrosion is a common problem in the mining and mineral processing industries, both in Saskatchewan and other parts of the world. The combination of erosion and corrosion in flow systems may lead to severe material wear in pipelines and equipment. When erosion and corrosion interact, a …
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The slurry erosive-corrosive wear of a selection of aliminium alloys, particulate reinforced aluminium metal matrix composites and a selection of steels
… concepts relating to the synergistic effects of erosion and corrosion. In general both the heat-treatable and non heat-treatable aluminium alloys exhibit lower slurry erosion rates with increasing hardness and work to fracture values. The slurry erosion rates of the aluminium matrix alloys …
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Performance of geopolymer concrete subjected to mineral acid corrosion and related to microbially-induced corrosion (MIC) of concrete in sewers
… show that high resistance under the static acid corrosion exposure condition cannot be extended to mean high resistance under the erosion-corrosion exposure condition for some concrete mixes. In this study, the static HCl test and the dynamic HCl test were used to measure the resistance of …
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Effect of Turbulence on the Passive Film Growth and Associated Durability of Aluminum Alloys in Simulated Seawater
… 630ks (Reynolds number of 262,000). No typical erosion-corrosion hydrological features were observed, however significant pitting and intergranular corrosion were observed with corrosion product caps covering 47% of the total ultrasonic transducers' measurement area. Passive film and pit growth …
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Environmental effects on the fatigue behavior of copper nickel alloys
… contained iron which was added to improve the erosion corrosion resistance. The extent of cracking varied with the test environment. Tests showed that oxygen and humid air promoted cracking while salt water helium was used as the baseline retarded cracking when environment. Hydrogen promoted …
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Effects of Scale Reduction Technologies and Chemical Inhibitors on Calcium Precipitation in Premise Plumbing Systems
… flow reduction, pressure loss, and erosion corrosion damage. Consumers are also concerned with unsightly soap scum, cloudy water, discolored glassware, and failing infrastructure including appliances and fixtures. There are many treatments available that claim to ameliorate scaling …
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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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