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 16 of 16 for “"Composite Coating"”.
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Development of a Nano-Composite Coating Technology for Improvement of Carbon Steel Pipe to Erosion-Corrosion in Oil Sands Slurry
… carbon steel pipes to E-C in oil sands slurry, a composite coating technology has been developed by electrolytic deposition in this research. Parametric effects on the structure and properties of the coating were investigated in order to fabricate high performance coatings. It is found that the …
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Tribology and Micro-Chemistry of Sputter Deposited Composite Coatings on Honed Steel Substrates
The tribology and micro-chemistry of TiO(,2)-TiC composite coatings on chemically honed steel substrates has been investigated. The primary wear resistant coatings (TiC) were deposited by rf sputtering using a dc substrate bias and the solid lubricant coatings (TiO(,2)) were deposited in an Ar and …
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Alchemistic Polymers for the Delivery of Therapeutic Agents in Treatment of Pediatric Tracheomalacia
… development of a MRI-visible multi-drug release composite coating that is to be applied to a bioresorbable stent. The coating combines novel polymers synthesized using non-traditional initiators such as contrast medium and therapeutic agents. The characterization of these polymers leads to the …
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Study of Titanium based Composite Coatings for Resistance against Molten Aluminium Soldering on H13 Tool Steel
… the die surface. The use of thermal spray coatings provides protection to the surfaces operating in severe environments. An HVOF thermally sprayed coating has the advantage of having excellent bond strength and very low porosity levels (< 1%). This research work is concerned with producing …
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Temperature-Dependent Fracture Toughness Evaluation of WC-10Co4Cr Coating/1018 Low Carbon Steel Substrate System
… fracture toughness of WC-10Co4Cr coating/1018 low carbon steel substrate, which is a brittle coating/ductile substrate system, is evaluated at microscopic level with two types of models developed in terms of the Arrhenius type equation and rate controlling theory, utilizing …
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Tribo-corrosion maps for steels, titanium and titanium carbide materials
… tribo-corrosion behaviour of titanium carbide composite coatings produced by Tungsten Inert Gas (TIG) welding torch melting process on steel and titanium substrates. The integrity of TiC composite coatings were checked and analysed on the substrates. The effects of change in sliding speeds and …
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Characterization of human skin emanations by Solid Phase Microextraction (SPME) extraction of volatiles and subsequent analysis by Gas Chromatography-Mass Spectrometry (GC-MS)
… microextraction fiber which incorporated a composite coating of liquid polymer matrix and solid porous particles. This protocol provided robust and convenient signatures of human skin emanations and was applied to two experiments for validation. In one experiment, a set of twins donated …
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The impact of coating architecture on the hardness, friction and wear resistance of hard and tribological nanocomposite coatings
… of interacting surfaces. Vapor-deposited surface coatings can provide extended lifetimes, increased efficiencies and energy savings for mechanical components and tools. These benefits can also be extended to space mechanisms and satellites with the use of vacuum solid lubricants. The material …
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Fabrication and tribology of composite coatings incorporating solid lubricant micro-reservoirs
<p>The tribological behavior of composite coating incorporating solid lubricant reservoirs has been investigated in this study. A new method, termed " microbeading" was devised to create microscopic reservoirs on the surface of sputter-deposited hard coatings. Pin-on-disk tests were used to …
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Antimicrobial PLA and Calcium Phosphate Coatings and Thin Film Composites for Implants Applications
… This thesis aimed to develop a novel implant coating system based on a ‘Local and Controlled Antibiotic Delivery System with Biodegradable Polymeric Thin Film Composite Coating’ for metallic bone implants. The specific aim of this study was to design a novel multi-functional and antibacterial …
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Powder/Sol-enhanced Au–Ni Electroplated Composite Coatings: Structures, Properties and Mechanisms
… research is to study and develop Au–Ni based composite coatings with improved mechanical properties. Noble Au coatings have a wide range of applications including various electrical contacts, decorative coating and jewelry. However, the low hardness and poor wear resistance of the coatings …
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Studio del comportamento meccanico di smalti porcellanati per substrati metallici
Composite porcelain enamels are inorganic coatings for metallic components based on a special ceramic-vitreous matrix in which specific additives are randomly dispersed. The ceramic-vitreous matrix is made by a mixture of various raw materials and elements and in particular it is based on …
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Characterization and development of composite structured hydrophobic surfaces
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Thermomechanical properties of novel lanthanum zirconate based thermal barrier coatings - an integrated experimental and modeling study
<p>Thermal barrier coatings (TBCs) are refractory materials deposited on gas turbine components, which provide thermal protection for metallic components at operating conditions. The current state-of-art TBC material is yttria-stabilized zirconia (YSZ), whose service temperature is limited to 1200 …
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Graphene Oxide Reinforcement in Plasma Sprayed Nickel-5%Aluminum Coatings
<p>Metallic plasma sprayed coatings are widely used in the aerospace industry for repair on worn engine components. However, the inherent defects in these coatings limit the variety of repairs and reduce the service life of the repaired parts. A potential solution to overcome this problem is to mix …
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Study of Si(Al)CN functionalized carbon nanotube composite as a high temperature thermal absorber coating material
… (upto approx. 1400 °C). To this end, a hybrid composite material consisting of PDC functionalized CNT is of interest as it can combine the unique physical properties of the two materials for applications requiring operation under harsh conditions. Here, we report synthesis and chemical …