Global ETD Search
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 307 for “"Corrosion resistance"”.
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Corrosion resistance of concrete reinforcement
… this thesis is to investigate the mechanism of corrosion of steel reinforcement in concrete and epoxy coated reinforcing bars as corrosion resistant alternatives. Several case studies explore the durability and deterioration issues for epoxy-coated bars discovered through 30 years of …
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Corrosion resistance of modified β-Eucryptite
The corrosion resistance of chemically modified β-eucryptite (Li<sub>0.41</sub>Mg<sub>0.035</sub>AlP<sub>0.52</sub>Si<sub>0.48</sub>0₄) having low expansion anisotropy and a near zero coefficient of thennal expansion was evaluated. Samples were exposed to aqueous hydrochloride acid at temperatures …
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Corrosion resistance of NZP and aluminum titanate
… the mechanical and thermal properties and corrosion resistance were evaluated. NZP (Ba<sub>1.25</sub>Zr₄P<sub>5.5</sub>Si<sub>.0.5</sub>0₂₄ and Ca<sub>0.5</sub> Sr<sub>O.5</sub>Zr₄P₆0₂₄) and aluminum titanate (AT) were exposed to a simulated diesel engine environment. The effects of thermal …
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Polymer impregnation of concrete as a means of improving corrosion resistance
… useful life of which is critically limited by corrosion due primarily, and ultimately, to sulphide attack. Sulphides are formed from the sewage sulphates, by bacteria in the slime layers on the walls of the pipe. These diffuse, firstly into the liquid, and then into the sewer atmosphere as …
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Wear and Corrosion Resistance Improvement of CoCrMo alloy by Tantalum Based Coatings
… the excessive wear of the polyethylene liner and corrosion of the metallic ball which causes osteolysis, inflammation, and loosening of the implant components. Coating the metallic femoral head is one of the most promising techniques to reduce the wear of the polyethylene liner and improve the …
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Bridge maintenance to enhance corrosion resistance and performance of steel girder bridges
… affect the condition of steel highway bridges, corrosion is identified as the main problem. In the USA corrosion is the primary cause of structurally deficient steel bridges.</p> <p>The benefit of regular high-pressure superstructure washing and spot painting were evaluated as effective …
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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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The influence of tempering on the corrosion resistance of newly developed steels
… the effect of heat treatment on the localized corrosion resistance of the low carbon, chromium containing steels, designated 825, 102A and 122 which recently have been developed. The potentiodynamic polarization technique has been employed to determine the corrosion characteristics of the three …
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The effect of accelerated ageing on the corrosion resistance of sheet duralumin
Thesis: B.S., Massachusetts Institute of Technology, Department of Electrochemical Engineering, 1935
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A Nacreous Self-Assembled Nanolaminate for Corrosion Resistance on 2024-Al Alloy
… clay, Laponite RD®, demonstrated significant corrosion resistance on 2024-T3 Al alloys after 168 hours of salt spray testing. The ISAM films offered corrosion protection only if there was a significant layer of underlying surface oxide present, however. It was found that ISAM deposited films …
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Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing Bars
An investigation of the structural behavior and corrosion resistance of hybrid fiber reinforced polymer (FRP) wrapped steel reinforcement bars for use in reinforced concrete structures. The investigation is comprised of a bar analytical model using laminate theory, an in-depth analytical model for …
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Chemical and structural analysis of grain boundaries in Inconel 690 for corrosion resistance
Stress Corrosion Cracking (SCC) is a failure mechanism that results from the combination of tensile stress, corrosive environment and material susceptibility; it is frequently an intergranular attack. Material-environment combinations for SCC readily exist in nuclear power plants, and are critical …
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Diffusion Barrier Coatings for Liquid Metal Corrosion Resistance in Next-Generation Nuclear Reactors
… and 600°C for LFRs) including standard immersion corrosion tests in liquid metal, 'liquid-like' diffusion couple tests to model transport through a liquid metal medium, as well as solid-state diffusion couple tests. Experimentation and characterization have confirmed the stability and …
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CORROSION RESISTANCE PERFORMANCE INVESTIGATION OF MILD STEEL BAR COATED WITH MAGNESIUM PHOSPHATE CEMENT PASTE
<p>"In this research study, the anti-corrosion mechanism of reinforcement embedded in magnesium potassium phosphate cement (MKPC) is explored. In addition, one type of additives, metakaolin, and one type of retarder, boric acid, are employed in MKPC to modify its properties in order to further …
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An Analysis of Microstructure and Corrosion Resistance in Underwater Friction Stir Welded 304L Stainless Steel
… the UWFSWs were found less susceptible to corrosion than arc welds due to the subsurface location of the sensitization bands. A SCC analysis of UWFSWs relative to base metal and arc weldments was performed. U-bends were exposed to two 3.5% NaCl cyclic immersion experiments at 21 °C and 63 …
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Abrasion-corrosion and stress corrosion resistance of a 9Cr-2Ni-0.7Mo steel in simulated mine water
… formed the subject of this study. Its abrasion-corrosion and stress corrosion performances were assessed in laboratory tests simulating the underground environment in South African gold mines. The results indicate that the alloy performs favourably in abrasive-corrosive applications, …
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Integrated Experimental and Computational Design of Alloys for Wear and Corrosion Resistance Across the Temperature Spectrum
Metals and alloys with exceptional resistance to wear and corrosion, capable of withstanding a wide range of temperatures and harsh corrosive environments, are critical for diverse applications, including aerospace, automotive, energy production, and medical devices. However, achieving this dual …
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Evaluation of the corrosion resistance of yttrium aluminum garnet thin films to hydrogen fluoride gas in CVD applications
Includes bibliographical references (pages 51-53).
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Polymer-Derived Ceramic Coatings for Stress and Corrosion Resistance in Stainless Steel: Optimization of Thermal Stability and Structural Integrity
… particularly SiON and SiOCN, aimed at enhancing corrosion resistance, thermal stability, and structural integrity of stainless steel in harsh environments. Using perhydropolysilazane (PHPS) and its derivatives, various coating compositions and pyrolysis conditions were optimized to tailor their …
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