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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 25 for “"high temperature materials"”.
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Flame Assisted Additive Manufacturing for the Synthesis of High-Temperature Materials
… an emerging technology for producing high-temperature materials non-traditionally, offers a promising solution. This method enables 3D printing of materials that can withstand high-temperature environments, which are crucial in nuclear reactions and aerospace applications. Additive …
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Modification of Fused Filament Fabrication Printer to Print High Temperature Thermoplastics to Improve Z-Strength
… omega shape around the printing nozzle to print high temperature materials and improve the tensile and flexural properties. The FFF additive manufacturing (AM) process is inherently a non-isothermal thermoplastic welding process that leads to anisotropic material properties. A non-traditional …
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Advanced Manufacturing and Dielectric Material Characterization Techniques for High-Temperature mm-Wave Antennas
<p>As traditional monitoring data sensors in high temperature environments such as gas turbine engines and aerospace applications are being replaced by wireless equivalents in recent years, there is a need for low-cost, low-time, and low-infrastructure alternatives to further push the state of the …
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Reaction processing for the development of ultra-high temperature ceramics
"Research into ultra high temperature materials has increased in recent years due to the need for material systems that can withstand the temperatures associated with hypersonic flight applications. ZrB₂ and HfB₂ are among the candidates for these extreme conditions. These diborides have melting …
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Overview and development of a wide bandgap, high temperature circuit and measurement solution
… in investigating the design and feasibility of a high temperature power converter for various applications. From the dawn of wide bandgap materials, primarily gallium nitride (GaN) and silicon carbide (SiC), research has pushed toward high temperature power circuit operation to either reduce …
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High temperature nanofoams based on ordered polyamide matrices
Polyimides are one class of high temperature materials that have been extensively used in the microelectronics industry in passivation and protection. The extremely good thermal stabilities, along with desirable mechanical and electrical properties, have led to their use in integrated circuits and …
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High-Temperature Performance of Carbon Fiber Reinforced Cyanate Ester Composites Filled with Nano-Ceramics
… material is fabricated for the field of high temperature applications. The effect of using nano-ceramics as a filler element in the cyanate ester resin will be evaluated. High temperature materials play a vital role in the entire aerospace industry. These materials are used in aerospace …
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Development of differential scheme micromechanics modeling framework for predictions of hot-mix asphalt (HMA) complex modulus and experimental validations
… particularly with application of the model for materials that vary from those used in the calibration of the model, and their reliance on large calibration data sets, which led to introducing some fuzzy factors in their predictions. In order to overcome the limitations of an empirical approach, …
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Materials for High Temperature Thin Film Thermocouple Applications
… systems used for the measurement of surface temperature in high temperature applications such as advanced aerospace propulsion systems and diesel engine systems are expected to perform in rapidly fluctuating and extremely high heat fluxes corresponding to high temperatures (in excess of 1400 …
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Flexible Mems: A Novel Technology To Fabricate Flexible Sensors And Electronics
… on rigid substrates with inorganic semiconductor materials such as Silicon. However, it is highly desirable that functional elements like sensors, actuators or micro fluidic components to be fabricated on flexible substrates for a wide variety of applications. Due to the fact that flexible …
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Phase equilibria, thermal expansion and symmetry relations within the HfO2-Ta2O5-TiO2-temperature system
… approach to the rapid production of the high temperature HfO2-Ta2O5-TiO2 phase diagrams is presented that highlights the combined use of: (i) in-situ high temperature X-ray diffraction (up to 3000 ˚C), (ii) Thermal expansion measurements (iii) extraction of atomic motifs with associated …
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Design considerations of a 15kW heat exchanger for the CSPonD Project
… was priced at $7.82/kg. A selection of high temperature alloys capable of withstanding the high operating temperatures of molten salts were chosen as candidate materials for the heat exchanger and ranked based on the allowable stress levels near the operating temperature range of the …
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Multi-Angle Beam Generation and Steering via Meander-Line-Coil EMATs
… for their operation, allowing them to be used on high-temperature materials or in hazardous areas where a coupling medium is unacceptable. The thesis begins with an overview of modern NDT methods (particularly Ultrasonic Testing (UT)) and explores the principles of electromagnetism relevant to …
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The high temperature structural evolution of hafnia
… the phase transformations in HfO2 occur at higher temperatures. Even though this phase transformation has been extensively studied in ZrO2 , the respective transformation in HfO2 is relatively unstudied and the properties that are reported are inconsistent. Much of the difficulty associated …
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Understanding surface and sub-surface phenomena in nickel-based superalloy castings
Nickel-based superalloys are high-temperature materials, created to operate in the aggressive conditions found within gas turbine engines. Single crystal turbine blades are investment cast, followed by a complex series of operations including heat treatment, machining, blasting, etching and …
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Thermochemical modeling and chemical vapor deposition of two-phase borides in the Hf-Si-B-Cl-H system
Advanced, very high temperature materials that are ablation-resistant in oxidizing atmospheres are needed to withstand the severe environments found in rocket engine and aerospace vehicle applications. Boride-based coatings that form a protective layer during oxidation have been found to withstand …
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High temperature, oxidation resistant, silicon nitride, ignition-assisted devices in multifuel aviation engines
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Annealing effects on platinum coating morphology
… thermodynamic stability in aqueous and elevated temperature applications. Therefore, the platinum group metals base intemetallics are of particular interest as next generation high temperature materials due to their high melting temperatures and better oxidation or corrosive resistance than …
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Polymer-derived Si-al-c-n Ceramics:oxidation, Hot-corrosion, And Structural Evolution
Polymer-derived ceramics are a new class of materials synthesized by thermal decomposition of polymer precursors. Previous studies have shown that the materials exhibit excellent thermo-mechanical properties and can be stable at temperatures up to 2000oC. Furthermore, the novel polymer-to-ceramics …
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Microstructural Evolution in Refractory Metal Multi-Component Alloy Systems
… and power-generation efficiency targets demand higher operating temperatures than those tolerated by current Ni-based superalloys, motivating the search for alternative high temperature materials. Refractory superalloys based on AlTaTiZr and AlMoNbTaTiZr have attracted particular interest, as …
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