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 10 of 10 for “"microstructure control"”.
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Sintering techniques for microstructure control in ceramics
… materials and to produce property enhancing microstructures. However, the interplay between materials, sintering techniques, and end properties is not fully understood in many material systems, and some fundamental aspects of sintering such as the nature of the effects of electric fields …
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Microstructure Control and Crystallization Kinetics in Amorphous Cadmium-Germanium - Arsenide (Devitrification, Differential Scanning, Calorimetry)
CdGeAs(,2) is a member of the II-IV-V chalcopyrite semiconductor family. The crystallization of the amorphous form of this compound was investigated using Differential Scanning Calorimetry. The basic operating principles of the two currently most popular DSC instruments (the DuPont 1090 DSC and the …
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Scanned pulsed laser annealing of Cu thin films
… material, there has been much research into microstructure control in Cu thin films, primarily because grain sizes affect resistivity. Also with Cu-based interconnects, interfacial electromigration is the dominant mechanism, and therefore the crystallographic orientation of the grains could …
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Beyond Embrittlement: In-Situ Explorations of Hydrogen Effects Near the Boundaries
… from the dependencies of hydrogen effects on microstructure factors as well as the difficulties in directly detecting hydrogen behaviors. This thesis first designs in situ experiments that combine different scanning electron microscopy based characterization capabilities with hydrogen charging …
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Growth and characterisation of multifunctional nanocomposite coatings
… in-situ formed periodic multiphase nanocolumnar microstructures, have been developed by a two-target reactive magnetron sputter deposition and nanoparticle-assisted electro-co-deposition processes. Advanced thin-film characterisation techniques, such as scanning electron microscopy, transmission …
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Microstructure Dual-Refinement and Mechanical Properties Manipulation of TiBw/TA15(Si) Composites by Thermo-mechanical Processing and Heat Treatment
… making it difficult to refine the grain size and control the silicide precipitates. The present work aims to prepare titanium matrix composites with refined grain size and silicide particles. To this end, network-architecture TiBw/TA15(Si) composites were prepared using low-energy ball milling and …
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Effect of roughness, microstructure, and chemistry on the environmental durability of structural alloys
… Thermal destabilization of the sputtered microstructure was found to take place on similar timescales to the transient oxide formation. Thus dilute Y additions were made to temporarily stabilize the sputtered microstructure and manipulate the transient stages of oxidation. Yttrium addition …
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Linking the kinetics of formation and growth to the mechanical properties of calcium carbonate composites
… the kinetics of calcium carbonate formation, microstructure and enhanced mechanical properties is still lacking. Inspired by the sophisticated mineral-organic structures with superior mechanical properties found in nature, this work aims to answer the following questions: 1) How do selected …
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Underlying deformation behavior of medium/high entropy alloys using advanced electron imaging and diffraction
… energetics and CSRO tuning as complementary controls for understanding and engineering deformation in HEAs. The second system comprises several refractory HEAs (RHEAs) with a primary body-centered cubic (BCC) crystal structure. Electron diffraction reveals that in the as-cast HfNb0.3TiZr and …
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Spatial confinement of metallodielectric eutectic alloys and related outreach curriculum studies
… sections; one focused on eutectic solidification control for optical applications and the second focused on outreach curriculum understanding for increased female engagement in STEM fields. Spatial Confinement of Metallodielectric Eutectic Alloys There is a large drive to develop new fabrication …