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.
Results
Showing 1 to 18 of 18 for “"tape casting"”.
-
Understanding How Tape Casting Titanium Diboride Shifts its Processing-Microstructure-Properties Paradigm Toward New Applications
… material relationship. In this work, aqueous tape casting of TiB2 has been investigated. Zeta potential measurements and suspension rheology were used to understand the role of dispersant, binder and plasticizer in the suspension and their interaction with the surface chemistry of the TiB2 …
-
Fabrication and Characterization of Freeze Tape Cast Anode Supported Solid Oxide Fuel Cells
… <p>This work concentrates on the novel freeze tape casting technique, which was developed as a direct mean of forming and controlling complex pore structures in ceramic materials. The work conducted in this paper focuses on the fundamental aspects of freeze tape casting to understand the …
-
The fabrication of high packing density ceramic powder beds for the three dimensional printing process
… possible approaches were investigated: repeated tape-casting, spray deposition, and ink-jet printing of slurry. The repeated tape-casting approach was able to produce powder beds with excellent surface finish (4 [mu]m peak-to-peak roughness), high packing density (60-65% of theoretical), and …
-
Structure and Property Evolution During Film Formation From Binary Colloidal Suspensions
The structure and stress evolution of aqueous tape-cast layers prepared with varying composition of Al2O3:latex were studied by shear rheology, direct visualization, and a controlled environment stress measurement device. Their low shear viscosity was nearly independent of alumina:latex ratio for …
-
Fabrication And Characterization Of Solid Oxide Cells for Energy Conversion and Storage
… solid oxide cells fabricated by freeze-drying tape-casting</p> <p>Tri-layer scaffolds have been prepared by freeze-drying tape casting process and the electrode catalysts are obtained by infiltrating the porous electrode substrates. Button cells will be tested for co-electrolysis of steam and …
-
Planar copper containing anode-supported solid oxide fuel cells
… electrolyte were realized through water-based tape casting, the cathode being added by screen printing. A 5 mol% of Lithium oxide addition allowed reducing the Gadolinia-Doped Ceria (GDC)-based electrolyte sintering temperature below the copper oxide melting point. IT-SOFCs sintered at 950°C …
-
Design of Sintered, Tough, Oxide Laminate and Fibrous Monolithic Composites
… monolithic composites were fabricated by using tape casting and co-extrusion technique, respectively. Mullite (3Al 2O3·2SiO2), alumina (Al2O 3), 50 vol% alumina · 50 vol% YAG (yttrium aluminum garnet, Y 3Al5O12) in situ composite, 50 vol% alumina · 50 vol% mullite in situ …
-
Scalable Processing Routes for Solid-State Energy Conversion and Storage Devices
… of solid loading of a slurry prepared for tape casting SEs enables highly uniform, dense coatings suitable for ASSBs, resulting in ionic conductivity similar to that of the pristine powder but with 11 times less area-specific resistance due to a reduction in thickness of the SE. It is …
-
Ceramic dielectrics for high energy density capacity application
… created by acceptors. Large area, crack free tapes were fabricated by tape-casting method using nano-sized (~40nm) TiO₂ powders. An energy density of ~14 J/cm³ was demonstrated by testing of TiO₂ thick films (~100µm).</p> <p>Studies on dielectric materials were extended to BaTiO₃/SrTiO₃ (BST) …
-
Development and characterization of polyphthalaldehyde for transient applications
… on processing (at scale) of cPPA in both solvent/tape casting as well as thermoforming via hot press molding. A photoacid generator (PAG) was incorporated into cPPA films to generate acid within the film in response to exposure to UV light. Acid cleaved the polymer backbone of cPPA and resulted in …
-
Design and Additive Manufacturing of Carbon-Fiber Reinforced Polymer Microlattice with High Stiffness and High Damping
… this problem. To realize this design, a novel tape casting integrated multi-material stereolithography system is developed and mechanical properties of samples fabricated using this system are evaluated. The design incorporating a stiff phase (CFRP) and a high loss phase, exhibiting high …
-
Polylactic acid/thermoplastic tapioca starch blend incorporated with selected essential oils for active food packaging
… cake was investigated. The TPTS was formed by tape casting method, while PLA/TPTS film by hot pressing. The results indicated an increase in crystallinity and elongation at break with increase in plasticiser loading in TPTS and percentage TPTS loading in PLA/TPTS blend; both were accompanied by …
-
Sintering of glass films on rigid substrates studied by optical techniques
… were prepared from slurries of the powder by tape casting. Sintering was carried out isothermally in a hot stage between 665°C and 775°C. The densification rates of both films were observed to be the same in the early stage of sintering but slowed down in the constrained film during the later …
-
Engineered Alumina / Silicon Carbide Laminated Composites
… (SPS) of green layers stacks prepared by tape casting water-based suspensions. Monolithic composites containing up to 30 vol% silicon carbide were fabricated and thoroughly characterized. Five engineered ceramic laminates with peculiar layers combination that is able to promote the stable …
-
Wässriges Foliengießen von BaTiO3 : Untersuchungen zur Entwicklung von Schlickerzusammensetzungen mit optimierten rheologischen Eigenschaften
Trotz vielseitiger ökologischer und wirtschaftlicher Vorteile von Wasser werden beim keramischen Nassformgebungsprozess Foliengießen auf Grund von Problemen bei der Herstellung homogener Schlicker industriell vorwiegend noch organische Lösungsmittel verwendet. Ziel dieser Arbeit war daher die …
-
Advances in the Production of Planar and Micro-Tubular Solid Oxide Fuel Cells
… SOFC with thin electrolyte by sequential tape casting method (thus avoiding the lamination step) and co-sintering. In order to do this, different aspects associated with the processing steps, from colloidal suspension stability, to defects related with green forming and sintering have been …
-
Materials Development for the Fabrication of Metal-Supported Solid Oxide Fuel Cells by Co-sintering
… of work, green multilayers were produced by tape-casting for the fabrication of MS-SOFC half-cell by co-sintering. The binder loss step during co-sintering was optimized so as to prevent the cracking of the multilayers due to the binder loss events. Intermediate layers (layer between metal …
-
Synthesis-Structure-Property Relationships in Lead-Free Piezoelectric Materials
… using molten salt synthesis (MSS) method. Tape casting method was used to align the whiskers in base matrix powder and subjected to various processing temperatures to elucidate the microstructure and texture evolution. For this, scanning electron microscopy (SEM), high resolution …