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 “"Nano composite"”.
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Stress development in particulate, nano-composite and polymeric coatings.
… 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 controlled …
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Ignition and combustion behaviors of nano-composite energetic materials
Advances in material processing have created nano-sized fuel particles with enhanced properties ideal for exothermic reactions compared with those of larger particles of the same material. As a result the combustion associated with nano-scale particles has recently shown the potential for enhanced …
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Development and evaluation of anti-biofouling nano-composite coatings
… a range of novel Ni–P–PTFE-biocide polymer nanocomposite coatings and modified DLC coatings with B, F, N, Si and Ti were designed and produced using electroless plating, magnetron sputter ion-plating and plasma enhanced chemical vapour deposition techniques. The surface properties of the …
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Studies on Structure and Property of Polymer-based Nano-composite Materials
<p>The mixing of polymers and nanoparticles makes it possible to give advantageous macroscopic material performance by tailoring the microstructure of composites. In this thesis, five combinations of nano inclusion and polymer matrix have been investigated.</p> <p>The first type of composites is …
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Modeling and Spray Pyrolysis Processing of Mixed Metal Oxide Nano-Composite Gas Sensor Films
… structural characteristics are investigated of nano structured thin films comprising of ZnO, SnO2, ZnO+In2O3 and SnO2+In2O3 composites. The model adequately predicts the size distribution and film thickness when the nanocrystals are well-structured at the controlled temperature and concentration.
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Development and Evaluation of NI-P-PTFE Based Nano-Composite Coatings for Medical Devices
… bacterial adhesion and removal were conducted on nano-composite Ni-P-PTFE-ZrO2 and Ni-P-PTFE-ZrO2-TiO2 coatings to see whether or not they have the capability of effectively resisting bacterial adhesion or reducing adhered bacteria. The anticorrosive properties of these Ni-P-PTFE based coatings …
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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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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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Custom engineered nanomaterials for energetics and energy applications
… this work, preparation and characterization of nanomaterials used for several energetics and energy applications are addressed. The main challenge of this effort is to design and prepare nanomaterials which have significant improvements associated with combustion dynamics, reaction rates, …
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Raman scattering in free standing porous Si films
… Raman spectra, we find that porous Si is a nano-composite material with a complex morphology and variety of crystallites sizes. The porous silicon layers can be used for thermal isolation and as floating substrates for lattice-mismatched hetero-integration.
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DESIGN AND FABRICATION OF METAL-POLYMER BASED CORE-SHELL ARTIFICIAL NANODIELECTRICS FOR CAPACITOR APPLICATIONS
… by introducing either ceramic or metal nano fillers. Usage of ceramic fillers would need higher loading, leading to less flexibility and compatibility with printed circuit boards. Thus metal nano fillers can be used effectively to enhance the dielectric properties. My thesis work …
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Graphene Nano-Composites For Hypervelocity Impact Applications
… research introduces new procedures to produce a nano-composite material with mortar-brick nano-structure inspired from nacre. Nacre-like composites were successfully manufactured, based on three host polymers, with a wide range of graphene concentrations. The manufactured exfoliated graphene …
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Atomistic simulation of deformation induced rotation in Cu-Nb composites
… bonding (ARB) of three copper-niobium (Cu-Nb) nano-composite models is simulated using molecular statics techniques to assess the rotational stability of Cu-Nb interfaces at high strains up to 90% thickness reduction. Crystals strain and rotate under compression, and certain Cu-Nb composites …
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Piezoresistive UHMWPE WMCNT Sensors for Instrumented Total Knee Replacements
… sensor. The addition of multi-walled carbon nanotubes (MWCNT) as electrically conducting fillers to the ultra-high molecular weight polyethylene (UHMWPE) transforms the electrically insulating UHMWPE to a nano-composite whose resistance changes with the applied stress. A steel mold and a …
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Development and characterisation of novel low-friction wear-resistant multiplayer nanocomposite CrAlTiCN coatings
… of novel low-friction, wear-resistant multilayer nanocomposite CrAlTiCN coatings. Systematic materials characterisation and property evaluation were conducted on the as-deposited and oxidation-tested CrAlTiCN coatings, and the results are presented and discussed. It is possible to generate novel …
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Synthesis and characterization of transition metal nitrides and carbides for catalysis and electrochemistry application
… manganese nitride and manganese nitride/oxide nano-composites embedded in carbon, while the second part of the thesis is focusing on the use of the “saccharide route” (namely cellulose, sucrose, glucose and lignin) towards metal (Ni0), metal alloy (Pd0.9Ni0.1, Pd0.5Ni0.5, Fe0.5Ni0.5, Cu0.5Ni0.5 …
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Mechanical response of polymer matrix composites using indentation stress-strain protocols
Polymer Matrix Composites (PMCs) are an important material for many advanced applications due to their potential to combine critical mechanical properties with a high strength-to-weight ratio necessary for advancing automotive and aerospace applications. Such materials have been studied extensively …
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Production and characterization of composite nano/micro sized particles by rapid expansion of supercritical solutions (ress) co-precipitation
Nanoscale composites of hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (RDX) and polymer binders were produced by co-precipitation using rapid expansion of supercritical solutions (RESS). The binders used in this study are poly (vinylidene fluoride-co-hexafluoropropylene) (VDF-HFP22), polystyrene (PS) …
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Electronic structure of perovskite oxide surfaces at elevated temperatures and its correlation with oxygen reduction reactivity
… to probe the local electronic structure at nanometer resolution in model multilayer superlattices. At 200-300 °C, the LSC2 14 layers are electronically activated through an interfacial coupling with LSC113 . Such electronic activation is expected to facilitate charge transfer to oxygen and …
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