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Showing 1 to 20 of 44 for “"ceramic material"”.
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Boeotian Kabeiric ware: the significance of the ceramic offerings at the Theban Kabeirion in Boeotia
This study presents a re-evaluation of the ceramic material from the sanctuary of the Kabeiroi at Thebes in Boeotia. The lack of relevant literary evidence necessitates a reliance on the archaeology as the primary means of interpretation. In particular the archaeological context and iconography of …
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Mechanics and Durability of Fiber Reinforced Porous Ceramic Composites
Porous ceramics and porous ceramic composites are emerging functional materials that have found numerous industrial applications, especially in energy conversion processes. They are characterized by random microstructure and high porosity. Examples are ceramic candle filters used in coal-fired …
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ΜΕΤΑΒΑΤΙΚΗ ΚΑΤΑΣΤΑΣΗ ΛΕΙΤΟΥΡΓΙΑΣ ΟΞΕΙΔΩΤΙΚΗΣ ΠΑΓΙΔΑΣ ΣΩΜΑΤΙΔΙΩΝ ΚΑΥΣΑΕΡΙΟΥ ΚΙΝΗΤΗΡΩΝ DIESEL
… THE MAJOR OUTPUT OF THE MODEL COMPRISE CERAMIC WALL AND EXHAUST GAS TEMPERATURE FIELDS IN THE TRAP, AS FUNCTIONSOF TIME, AS WELL AS THE LOADING LEVEL OF THE TRAP. THE APPLICATION OF THE SIMULATION MODEL CLARIFIES THE CRITICAL IMPORTANCE OF THE WALL TEMPERATURE AT TRAPOUTLET AND FORECASTS …
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Manufacture and Characterization of Additively Manufactured Ceramic Electromagnetic Structures
… structures using low-loss dielectric materials. This enables the construction of dielectrics with complex shapes that enable innovative microwave applications such as resonators, filters, and metamaterial lenses. This thesis addresses the production and characterization of cellular …
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Optical properties Of CAD-CAM lithium disilicate glass-ceramic in different firing temperatures and thicknesses
… IPS e.max® CAD lithium disilicate (LD) glass-ceramic material has become one of the most popular esthetic restorative materials in digital assisted dental esthetic restoration. The mechanical and optical properties of this material have been investigated in several studies. However, there is a …
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A Dy:YAG coated fiber optic thermal sensor - proof of concept
… a fused silica optical fiber. The Dy: YAG is a ceramic material which fluoresces in the visible when excited with ultra-violet radiation. The visible emission has a direct correlation with temperature up to the melting point of the ceramic (~2100 K). The basic mechanism used to excite the Dy: …
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CMZP and Mg-doped Al2TiO5 Thin film Coatings for High Temperature Corrosion Protection of Si3N4 Heat Exchangers
Silicon nitride (Si3N4) is a potentially good ceramic material for industrial heat exchangers. However, at elevated temperatures and in coal combustion atmospheres its lifetime is severely reduced by oxidation. To increase its corrosion resistance, the formation of a protective oxidation barrier …
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Novel processing of porous bioceramic structures
… – 400 μm and porosity >90%, are preferred. Bioceramics have been used in numerous orthopaedic applications since the 1960s. While bioinert materials such as zirconia have been used in load bearing applications due to their impressive mechanical properties, bioactive materials such as …
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Chlemoutsi castle (Clermont, Castel Tornese), Peloponnese: its pottery and its relations with the west (13th-early 19th c.)
… illustrating the tastes of the Latin elite in ceramics. The pottery proves that the castle remained important after the end of the Frankish occupation and indicates its decline in the 18th c. The ceramic material of the Post-Byzantine period reflects the incorporation of the castle into the …
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Mapping the Composition and Distribution of Medieval Pottery in South East Wales
… or chemical fingerprinting, of Welsh medieval ceramics.<br/><br/>The study initially presents an overview and summary of our knowledge of the medieval Welsh ceramic industry as it currently stands. Subsequent chapters present additional overviews of the chemical testing of ceramic material and …
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Some experimental investigation on effect of light and vibration on nano coated piezo for energy harvesting
<p>PZT is a promising piezoelectric ceramic material which has a wide range of applications in a variety of fields such as acoustic sensors and transducers, electrical switches, medical instrumentation, artificial sensitive skin in robotics, automotive detection on roads, nondestructive testing , …
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Exploring the possibility of low temperature glazing in faience from the Djoser Step Pyramid through compositional analysis
Egyptian faience, a glazed, non-clay based ceramic material, is found throughout Egypt in a time range pre-dating the Predynastic Period (5500 - 3100 BCE) and extending well beyond the Roman Period (30 BCE - 641 CE). One of the most monumental feats of faience production and one of the first …
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MULTILAYER COMPOSITE SOLID ELECTROLYTES FOR LITHIUM ION BATTERIES
… multilayer SE was fabricated using polymeric and ceramic electrolytes, which can integrate the merits from different layers and materials and optimize its overall performance. </p> <p>In order to choose an ideal ceramic material for the multilayer electrolyte fabrication, three different types of …
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Spatiotemporal Temperature and Concentration Measurements in a Monolith Reactor
… commercial honeycomb reactor is made of a ceramic material, which is deposited with the high surface area washcoat carrier such as Al2O3. The polluted gases enter the reactor channels and diffuse through this porous structure to the catalytic sites where they are converted to less harmful …
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Development of High Strength Dicalcium Phosphate Anhydrous Cement with Nanosilica Sol
… Phosphate Anhydrous (DCPA, Monetite) based materials have large potential as bone repair substitutes and drug delivery systems due to high bioactivity and known solubility in body fluid, and they could provide useful scaffolds in tissue engineering and orthopedic applications. Clinicians …
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Influência de Recobrimento vítreo e ataque com ácido fluorídrico na topografia final da superfície Y-TZP e qualidade adesiva entre Y-TZP e cimento resinoso
… acid etching and glass coating on the ceramic surface, its interaction mechanisms on the Y-TZP surface and the consequence of it on the bond strenght between ceramic and resin cement. Both treatments aim to optimize adhesion at the interface. First it has been found that 10% …
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Ultrasonic and electroplating approach for washcoat of γ-alumina and nickel oxide (nio) catalyst on fecral substrate for catalytic converter
… Three-Way Catalytic Converter (CATCO). Metallic material potential to replace the ceramic material, therefore FeCrAl substrate used as metallic material and γ-Al2O3 as washcoat material and NiO catalyst. This study propose ultrasonic and electroplating approach as coating technique which not …
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Controlling ceramic porosity using carboxylate-alumoxane nanoparticles
… of carboxylate-alumoxanes, such as ceramic yield, particle size, pore volume, and pore diameter are dependent upon the carboxylate ligand that is substituted on the surface of the boehmite mineral. Of the synthesized alumoxanes, acetic acid-alumoxane (A-alumoxane), has the smallest …
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The Irradiation Tolerance of Zirconium-based MAX Phases
… introduced phases incorporating zirconium. These materials have been nominated for applications that experience high temperatures and irradiation damage. In this work, two newly synthesised zirconium-based MAX phases were investigated for their irradiation tolerance using high energy heavy ions at …
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Taylor Impact Test and Penetration of Reinforced Concrete Targets by Cylindrical Composite Rods
… of either a steel or copper shell enclosing a ceramic. The ceramic and the steel are assumed to fail at a critical value of the effective plastic strain, whereas no failure is considered in the copper. The thermoviscoplastic response of steel and copper is modeled by the Johnson-Cook relation …
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