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 22 for “"Composite coatings"”.
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Combustion synthesis of MoSi₂-composite coatings
Includes bibliographical references (pages 167-179).
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Development and evaluation of anti-biofouling nano-composite coatings
… rate is the application of a range of different coatings to the surfaces of equipment. So far the most promising coatings include Ni–P–PTFE coatings and modified diamond like carbon (DLC) coatings etc. However these coatings need to be futher improved and optimised in order to get the best …
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Innovative smart composite coatings endowing antimicrobial properties to several materials
L'abstract è presente nell'allegato / the abstract is in the attachment
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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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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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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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Development and Evaluation of NI-P-PTFE Based Nano-Composite Coatings for Medical Devices
… this study, two kinds of Ni-P-PTFE based coatings including Ni-P-PTFE-ZrO2 and Ni-P-PTFE-ZrO2-TiO2 were developed by electroless plating technique. The assays of bacterial adhesion and removal were conducted on nano-composite Ni-P-PTFE-ZrO2 and Ni-P-PTFE-ZrO2-TiO2 coatings to see whether …
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Development of nano composite coatings for enhanced performance in non-conventional lubricants under sliding contact.
… and reliability of electrodeposited Nickel based composite coatings for refrigerant-lubricated tribological systems. For this study a micro-friction tribo-meter has been modified to incorporate the testing specimens and refrigerants under various operating conditions. Hydrofluoroethers (HFEs) are …
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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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Electroplated composite coatings with incorporated nano particles for tribological systems with the focus on water lubrication
… feasibility of the electrodeposited Ni–based nanocomposite coatings for water-lubricated tribological systems. The tribological behaviour of newly developed nanocomposite coatings is assessed under immersed water lubrication. For this reason test rig modification is deployed, to allow tribometer …
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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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Amorphous silica-based carbon nanotube and silver nanoprism coatings: synthesis and investigation of their optical properties /
In this thesis two type silica composite coatings were investigated which includes (i) silica-single-walled carbon nanotube (SWCNT) and (ii) silica-silver nanoprism (AgNPR) coatings. Research results showed, that the highest colloidal stability of SWCNTs in ethanol is obtained with surfactant P4VP. …
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An Investigation of Wear-Resistant Coatings on an A390 Die-Cast Aluminum Substrate
In this investigation, four coatings were tested for their ability to increase the wear life of A390 aluminum primary clutch sheaves used in continuously variable transmission (CVT). The coatings tested were: hard chrome, electroless nickel metal, hard coat anodizing and composite ceramic coating. …
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Diamond-like carbon and ceramic materials as protective coatings grown by pulsed laser deposition
… thin films are used as hard and wear-resistant coatings, for optical, corrosive, and refractory applications that are of crucial importance. Additional requirements place even more stringent conditions on the deposition processes. The properties of coatings deposited by pulsed laser deposition …
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Synthesis and characterization of polymer nanocomposite materials for advanced application
… series of polymeric inhibitor and polymer nanocomposites coatings. A major aim of these studies was to synthesis a new series of hydroxy ester- amide monomers (N-(2- hydroxypropyl) methacrylamide, 4-((2-hydroxypropyl) amino)-4-oxobutyl methacrylate, 6-((2-hydroxypropyl) amino)-6-oxohexyl …
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Evaluation of Two Lipid-Based Edible Coatings For Their Ability to Preserve Post Harvest Quality of Green Bell Peppers
Two lipid-based edible coatings, Apex B (AC Humko, Memphis, TN) and Durafresh (Pacrite, Ecoscience Produce Systems, Orlando, Fl) were evaluated for their ability to preserve post harvest quality changes in green bell peppers (Capsicum annum L. cv. King Arthur). Post harvest storage quality …
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Innovative composite enamel coatings with improved abrasion resistance and mechanical properties
… with the First Industrial Revolution, as these coatings were able to combine aesthetically pleasing colors and surface finishing with superior technical properties, including durability, thermal resistance, and chemical resistance. Nowadays, vitreous enamels, which are silica- based inorganic …
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Stress development in particulate, nano-composite and polymeric coatings.
… development during the drying of particulate coatings, nano-composite coatings and VOC compliant refinish clearcoats. The results obtained during this research establish the mechanism for the stress development during drying in various coating systems. Coating stress was measured using a …
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Nano-scale scratching in chemical-mechanical polishing
… bounds are established for both homogenous and composite coatings. Multi-particle models are also presented. These models use contact mechanics at the pad-particle-coating interface to relate the global parameters of CMP, such as pressure, particle radius, slurry volume fraction and the material …
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