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 31 for “"Protective Coating"”.
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UV-CURABLE PROTECTIVE COATING FOR THE INNER SURFACE OF STEEL PIPES
… for new, environmentally friendly anticorrosive coatings in heavy industry. While waterborne, high solids or powder coatings have emerged as alternatives, solvent-borne coat-ings still dominate the market, contributing to polluting and toxic volatile organic compound (VOC) emissions. UV-curable …
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The tribological behavior of graphene and its role as a protective coating
… nanomaterial and evaluate its performance as a protective coating. Graphene is the strongest material ever measured, gas-impermeable, chemically and thermally stable, and atomically-thin, making it an excellent candidate as a protective coating. The fundamental tribological behavior of graphene …
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Design of Polymer Composites With Improved Adhesion and Wear Properties
… lower wear compared to a commercial PTFE based coating. TOF-SIMS analysis showed that ZonylRTM particles had migrated down into the coating at least 1.5 microm deep when the wear track was only 0.2 microm deep, which means that a ATSP and Zonyl RTM composite had formed due to pressure and …
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Applications of powder interlayers for large gap joining
… and the solid at the bonding temperature, a protective coating on the particles of the base material was applied to avoid excessive dissolution and inhibit early diffusional solidification, which can block the infiltration paths and prevent full infiltration. Direct coating of the MPD on the …
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A method of fabricating coated splices for oilfield applications
… connect two wires, cover the connection with a protective coating, and then assess the integrity of the finished splice. This project investigates how ultrasonic welding and injection molding can be employed in making the splice. After equipment and a process are designed, splices are produced …
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CHARACTERIZATION OF SENSING REPAIR MATERIALS
… repair material typically used in steel pipes as protective coating was investigated to evaluate the field performance in terms of shrinkage, water absorption, and strength characteristics. For the piezoresistive cementitious and polymeric materials the resistivity change was over 10 times more …
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A study of plasma etching for use on active metals
… metals, a process is being developed to create a protective coating by removing the active metal component from the surface of a mixture of the active metal and a stable element via immersion in a wet chemical bath. It is the purpose of this thesis to investigate the utility of a plasma etching …
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Inscription of in-fibre photonic devices by an infrared femtosecond laser
… low thermal stability and the need to remove the protective coating prior to inscription. By combining the great flexibility offered by the point by point method with the advantages inherent to inscription by an infrared femtosecond laser, the previous disadvantages are overcome. The method here …
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Microcapsule-based self-protecting coatings
… approach to mitigate corrosion is to apply a protective coating (layer) to the targeted “substrate” well before placing the item in service. The protective coating acts as a passive layer between the protected substrate and the corrosive environment. Generally, the protective layer includes …
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Inkjet printing of resistive-type humidity sensor for harsh environments
… and vinyl alcohol (EVOH) is used as sensor protective coating. Double strand water- soluble PANi ink is synthesized by polymerization of aniline monomers with poly(4- styrenesulfonic acid) (PSSA) as a template. Manufactured devices showed high sensitivity (/% @ 45%RH) to humidity with good …
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In-situ early detection of metal corrosion via "turn-on" fluorescence in "smart" epoxy coatings
<p>Organic coatings (e.g., epoxy coatings) have been widely used to protect metal and metal alloys against corrosion. However protective coating fails with time, leading to corrosion of the metal substrate. When localized corrosion occurs, without being detected, it can result in disastrous failure …
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Perovskite interfaces with protective zinc compounds – DFT computation and related experiments
… rapidly upon environmental exposure without a protective coating. Many studies have focused on core-shell structural strategies to enhance their stability, but the interfacial interactions between soft perovskite core-shell materials remain poorly understood. This thesis systematically studies …
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In-situ synchrotron studies of turbine blade thermal barrier coatings under extreme environments
Thermal Barrier Coatings have been used for decades to impose a thermal gradient between the hot combustion gases and the underlying superalloy substrate in engine turbine blades. Yttria Stabilized Zirconia (YSZ) is an industry standard high temperature ceramic for turbine applications. The …
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The effect of free chlorine and monochloramine on lead in drinking water and epitaxial electrodeposition of tin sulfide
… and photovoltaic applications and in the protective coating industries. This dissertation primarily addresses the environmental aspects of electrochemical deposition. In the first part of this study, Pb dissolution in drinking water was investigated in the presence of two disinfectants: …
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Experimental and Numerical Study of Multi- Phase Flow in a Coaxial Air Jet
… it was projected on to a substrate to provide a protective coating. Intermediate goals towards the final goal were identified. This thesis was based on four papers with each paper reporting the results of the work on an intermediate goal. The first paper reported on work with the turbulent …
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Enhancing Corrosion Resistance and Hardness Properties of High-Carbon Steel and Aluminium Bronze Alloy Through Novel Surface Modification Technique
… streams as the main source for production of protective coating instead of implementing costly conventional coating methods. Using this method, it can be applied to other metals such as aluminium bronze alloys.This integrated approach is prominent to economic and environmental sustainability, …
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Concrete surface coatings and the influence of substrate moisture condition on bond strength
… coat the concrete surface with a decorative or protective coating. There are many coatings available, ranging from simple to complex formulations of inorganic and/or organic materials. These coatings each perform a unique function and will often be designed to combat a specific problem which the …
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Nanomaterials for Biological Applications: Drug Delivery and Bio-sensing
… as promising candidates for biomedicine. A protective coating process with biocompatible materials is commonly performed on MPs to further enhance their colloidal and chemical stability in the physiological environment. Mesoporous hollow silica is another class of important nanomaterials …
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Ultraconformal chemical vapor deposition and synthesis of transition metal nitride films
… (AR) of features tend to increase. Uniform coating of these features is required, but the difficulty scales with AR. I have demonstrated ‘static’ CVD in a simple, unpumped apparatus to conformally deposit stoichiometric and pure metallic films of hafnium diboride and iron in high AR …
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