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Showing 1 to 20 of 48 for “"synchrotron x ray diffraction"”.
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Three Dimensional Characterization of Deformation Twins Using Synchrotron X-Ray Diffraction
… novel experimental technique, three-dimensional synchrotron X-ray diffraction, on two different HCP metals and acquire a statistical data that can help us understand fundamentals of deformation twinning. After a literature review in chapter two, the steps used for preparing samples, conducting …
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Raman Spectroscopy and Synchrotron X-ray Diffraction Study of Lunar and Terrestrial Plagioclase Feldspar at High-Pressure and High-Temperature Conditions
… using laser heating diamond anvil cell and synchrotron X-ray diffraction. Results reveal pressure/temperature-induced amorphization and crystallization kinetics of high-pressure phase changes. The phase diagram of intermediate plagioclase was constructed up to 64 GPa and 2000 K and a new …
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Development and Optimisation of an Optofluidic Evanescent Field Nano Tweezer System for Trapping Nanometre Crystals for Synchrotron X-Ray Diffraction Experiments
X-ray crystallography (the analysis of the diffraction pattern of a high-power X-ray) has become the preferred method for investigating complex molecular structures. Research has continued to improve both the hardware and software elements of this methodology; refining critical factors such as …
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Investigation of the mechanical behavior of rim/blister structure hydride phases in Zircaloy-4 by utilizing high energy synchrotron X-ray diffraction
… observed in UNF cladding material. High energy synchrotron X-ray diffraction at the APS 1-ID was utilized to study the mechanical response of hydride and matrix phase with the rim/blister distribution in a cold worked stress-relieved (CWSR) Zry-4 sheet. The only hydride phase observed in the …
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Synchrotron X-Ray Diffraction and Piezospectroscopy used for the Investigation of Individual Mechanical Effects from Environmental Contaminants and Oxide Layer Undulations in Thermal Barrier Coatings
… and Thermally Grown Oxide (TGO) strain in sprayed Thermal Barrier Coating (TBC) samples of varying porosity with and without CMAS ingression. In-Situ Synchrotron X-ray Diffraction measurements were taken on the sample under thermal loading conditions from which the YSZ and TGO peaks were …
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Synchrotron X -Ray Scattering Studies of Local Fluctuations in Lead Magnesium Niobate Relaxor Ferroelectrics
Temperature dependent synchrotron x-ray diffraction studies of PMN-PT single crystals confirmed the existence of anti-ferroelectric fluctuations produced by correlated atomic displacements using state-of-the art experimental facilities. Detailed quantitative analysis of the corresponding …
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Effects of Laser Shock Peening on Residual Stress, Texture and Deformation Microstructure of Ti-6Al-4V Alloy
… Scanning Probe Microscopy, Conventional X-ray Diffraction, Synchrotron X-ray Diffraction, Electron BackScattered Diffraction, microhardness and nanoindentation have been used to characterize the laser shock peened Ti-6Al-4V alloy samples.The microstructure and surface modification of laser …
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Nondestructive Analysis of Advanced Aerospace Materials via Spectroscopy and Synchrotron Radiation
… environments. Characterization methods utilizing synchrotron X-Ray diffraction and spectroscopy can decrease the time required to determine an emerging material's readiness for application through intrinsic information on the material response and failure mechanisms. In this study, thermal barrier …
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High pressure diffraction studies of gallosilicate natrolite: applications to pressure-induced cation trapping
… and structurally characterised by powder neutron diffraction and synchrotron X-ray diffraction techniques at ambient pressure to elucidate details of the ordering. In addition, high pressure neutron and synchrotron X-ray diffraction data have been collected on both the tetragonal and the …
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Novel approaches for the characterisation of spinodal alloys
… is critical. Conventional microscopy and diffraction‑based methods often provide valuable insights. However, the former are often too localised, while the latter tend to lack the necessary resolution to distinguish between features arising from spinodal decomposition and those from …
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Synthesis, Structure and Transport Properties of New Lanthanum-based Ternary Hydrides
… under high pressure using diamond anvil cells, synchrotron X-ray diffraction, laser heating, and electrical transport measurements. In La–Y–H systems, partial Y incorporation lowered the formation pressure of LaH10-type clathrates while preserving the hydrogen cage network. Synchrotron X-ray …
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Coupling qualitative and quantitative analyses of pharmaceutical materials enabled by second harmonic generation microscopy
… measurements by confocal Raman spectroscopy and synchrotron X-ray diffraction were performed on regions of interest (ROI) identified by SHG. In both cases, spatial restriction of the spectroscopic technique to these regions of interest lowered the detection limits of Raman and synchrotron X-ray …
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Structural aspects of pressure- and temperature-induced phase transitions in low-dimensional systems
… diamond anvil cells by means of single-crystal synchrotron X-ray diffraction and by complementary techniques including Raman and Mossbauer spectroscopies and powder X-ray diffraction. The results reveal a plethora of high-pressure phase transitions in MOCl. A structural analysis allowed to …
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Deformation mechanisms in bulk nanostructured aluminum obtained after cryomilling and consolidation by spark plasma sintering
… can be recovered after unloading. High-energy synchrotron X-ray diffraction experiments revealed that, there is a correlation between plastic strain recovery and microstructural evolution detected during in-situ loading-unloading experiments. Using a deconvolution approach, the nanostructured …
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Study of Functional Complex Oxides at High Pressure-Temperature Conditions
… studied under high pressures and temperatures. Synchrotron X-ray diffraction, Raman spectroscopy, neutron scattering, and first-principles calculations were used to probe the structural response of Li2CoO2F across multiple length scales. These studies reveal how fluorination and Li enrichment …
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Magnetic ordering and spin wave dynamics in transition metal arsenides
… at different temperatures using neutron powder diffraction techniques, and using inelastic neutron scattering techniques to characterize exchange interactions in these materials. We discover a new ternary metallic arsenide Cu0.82Mn1.18As which crystallizes in the hexagonal crystal system and …
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Mitigating high-temperature, high-pressure hydrogen attack
… quantification of carbide volume fractions using synchrotron X-ray diffraction as well as optical microscopy to measure void volume-fractions, were used in characterising hydrogen-attack resistance. Consistent interpretations of experimental data have been obtained by comparison against …
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Chemical Physics of Hydrazine Under Pressure
… By combining vibrational spectroscopy and synchrotron X-ray diffraction across a wide pressure range, this work establishes a unified picture of the structural, vibrational, and thermodynamic response of hydrazine to extreme compression. The results reveal multiple pressure-induced phase …
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Geopolymer-derived ceramics and composites
… were studied with in situ high temperature synchrotron X-ray diffraction to explore the atomic mechanisms responsible for the thermal evolution of these compounds. The framework distortions identified were then systematically manipulated to give tailored thermal expansion values. Several …
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Experimental constraints on the rheological behavior of olivine at upper mantle conditions
… waged with two powerful emerging technologies: synchrotron x-ray diffraction, and complementary multi-anvil deformation machines. These advancements have allowed precisely controlled deformation experiments at conditions representative of the deep upper mantle, with unprecedented measurement …
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