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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 23 for “"Corrosion testing"”.
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Electrochemical corrosion testing of boronized and unboronized steels
… substantially. One of these properties is corrosion resistance. Corrosion resistance testing has been performed in many ways right from the traditional weight loss methods to the latest electrochemical techniques. These electrochemical techniques are more reliable and less time consuming …
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Corrosion Testing and Modeling of Chloride-Induced Corrosion Deterioration of Concrete Bridge Decks
… involved visual inspections, damage surveys, corrosion testing including continuity, one-point resistivity, four-point resistivity, half-cell potentials, and three-electrode linear polarization, reinforcement cover depths, chloride samples. The Virginia bridge deck was built with epoxy-coated …
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The detection of crevice corrosion in titanium and its alloys through the use of potential monitoring
Conventional laboratory crevice corrosion testing requires approximately thirty days and is a simple go/no go test which does not indicate crevice incubation time and propagation. This study focuses on the effectiveness of potential monitoring to detect the onset of crevice corrosion and …
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Evaluation of Novel and Low-Cost Materials for Bipolar Plates in PEM Fuel Cells
… plates. A fuel cell test stand, capable of testing six cells simultaneously, was used for long-term corrosion testing. In-situ tests took place in 5 cm2 active area fuel cells with cathode humidification. Using data from test cells containing graphite monopolar plates as a baseline, two …
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Galvanic Corrosion of High-Temperature Low-Sag (HTLS) High Voltage Conductors: New Materials—New Challenges
… but there might be some concerns about their corrosion resistance.</p> <p>These new conductors use materials relatively new to the power industry, such as advanced carbon fiber polymer matrix composites and unique metal matrix composites/nano-composites predominantly used in aerospace …
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Telluridm-induced corrosion of structural alloys for nuclear applications in molten salts
… by which tellurium causes intergranular corrosion (IGC) of structural alloys in molten salt reactors is currently poorly understood. Limited corrosion testing has been performed on a few select alloys in simulated reactor conditions. In this thesis, the results of performing 50 h, 100 h, …
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COLD SPRAYED COATINGS WITH DUAL NANOPARTICLE REINFORCEMENTS FOR WEAR AND CORROSION PROTECTION
… in hardness from the control was achieved. Wear testing of each coating was performed, but most of the tests drove through the coatings into the substrate, indicating more refinement of the testing parameters is required. Additionally, corrosion testing was performed on cold sprayed samples for …
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Synthesis and characterization of atmospheric pressure chemically vapor deposited aluminum
… to produce high quality aluminum coatings for corrosion protection of steel. The coatings were produced through thermal decomposition of tri-isobutyl-aluminum (TIBAL) over the 275 to 300 C temperature range. Under optimal deposition conditions, growth rates as high as 1.2 um/min were achieved. …
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The corrosion of CoCrMo alloys for biomedical applications
… hip resurfacing joints due to their high corrosion and wear performance. The present project was carried out to investigate the feasibility of taking electrochemical measurements from hip resurfacing joints whilst articulating in a hip simulator. In this study, the effect of ‘as-cast’ and …
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Scaling Carbon-Cement Supercapacitors for Energy Storage Use-Cases
… under electrolyte exposure, and (3) identifying corrosion-resistant current collectors that maintain conductivity and mechanical durability under harsh conditions. Bitumen-based coatings were found to be promising sealants for moisture containment. Shrinkage studies [ are underway, I will …
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Understanding the Effect of Oxygen on the Degradation of 316L in Liquid Sodium
… understanding of the mechanisms of liquid sodium corrosion under ideal and transient impurity conditions is required. This work investigates liquid sodium corrosion mechanisms in candidate SFR alloys when exposed to varied oxygen concentrations. A high-throughput, oxygen-controlled liquid sodium …
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Novel Methods and Self-Reinforced Composite Materials for Assessment and Prevention of Fretting Corrosion in Modular Tapers
… to prevent the onset of mechanically assisted corrosion in modular taper devices.</p> <p>A study of the seating and taper locking mechanics of modular taper samples was conducted, and the effect on taper engagement strength of seating load, loading rate, taper moisture, and taper …
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Microstructure and precipitation effects in inconel alloy 600.
… of material degradation, namely, intergranular corrosion. A range of carbide precipitation 'C-curves' have been established and related to thermal and mechanical processing. Accelerated corrosion testing has provided an insight into the relationship between precipitation and structure on the …
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Design, Material and Surgical Assembly Effects on Fretting Corrosion Behavior of Modular Tapers in Orthopedic Implants
<p>Mechanically assisted crevice corrosion (MACC) has become a significant problem in the orthopedic device industry, particularly in modular devices with metal-on-metal (MoM) tapered interfaces. Oxide film abrasion, leading to fretting corrosion in the presence of a crevice, accelerates the …
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Corrosion Behavior of Potential Structural Materials for use in Nitrate Salts Based Solar Thermal Power Plants
… reliability. This study investigates the corrosion behavior of structural alloys and electrochemical testing in molten nitrate salts at three temperatures common to CSP plants. Corrosion behavior was evaluated using gravimetric and inductively-coupled plasma optical emission spectroscopy …
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Development of high performance and efficient coating repair systems for offshore tropical marine environment
… followed by coating application and performance testing. The samples were first pre-corroded in a corrosion chamber to mimic degradation from service then surface preparations were performed after which a coating was applied. Coated new samples (RN) and fully corroded samples (SN) were the …
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Galvanic Corrosion of Aluminum/Carbon Composite Systems
… composites (CFRP) are typically considered corrosion resistant when used alone, but can develop severe galvanic corrosion when in physical contact in the same component or structure.</p> <p>General engineering practice is to avoid contact between aluminum and CFRP in any application where …
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Capturing irradiation-enhanced corrosion of zircaloy-4 with a charge-based diffusion/drift phase field model
… water reactors (PWRs) for decades, and enhanced corrosion rates in reactors compared to out-of-pile have long been observed. However, the exact mechanism explaining the early departure from autoclave kinetics after 3-5 microns of oxide have formed has proved elusive. This thesis considers and …
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Influence of the heat treatment procedure on the stress corrosion cracking behaviour of low pressure turbine blade material FV566
Stress corrosion cracking is one of the leading damage mechanisms in low-pressure turbines in the power generation industry; in LP turbine blades it primarily occurs in the last stage blades. The research investigated the influence of tempering temperature on the microstructure, mechanical …
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Blister Test for Measurements of Adhesion and Adhesion Degradation of Organic Polymers on AA2024-T3
A key parameter for the performance of corrosion protective coatings applied to metals is adhesion. Surface preparation prior to coating application is known to be critical, but there is a lack of understanding of what controls adhesion. Numerous techniques have been developed in the last decades …
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