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Showing 1 to 20 of 1172 for “"XRD"”.
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Quantification of fatigue damage in AISI 316L stainless steel using X-Ray powder diffraction (XRD)
… examination Power X-ray diffraction (PXRD). In industry, the evaluation of material deformation post cycling loading is often performed using microscopic techniques such as transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD). However, each of these …
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Characterization of Residual Mineral Content of Bauxite Stockpiles in Saline County, Arkansas: An XRD Analysis Approach
… County bauxite mine, using Xray Diffraction (XRD) on 25 samples to characterize mineral phases and compare them with preliminary X-ray fluorescence (XRF) data. Gibbsite and kaolinite dominate the mineralogy, with gibbsite showing strong positive correlations with zirconium (r = 0.76) and …
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Geochemical Characterization of the Louann Salt, Puma Field, Green Canyon, Gulf of Mexico Basin – Using XRF and XRD
… feet) below the surface. X-ray diffraction (XRD) analyses were conducted on ten samples within the suture zone to determine its mineralogy.</p> <p>The results of the XRF analyses delineated the upper and lower boundaries of the Louann Salt by the inverse relationship between the chlorine and …
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Raman spectroscopic application for the analysis of organic compounds and minerals of astrobiological significance. The detection and discrimination of organic compounds and mineral analogues in pure and mixed samples of astrobiological significance using raman spectroscopy, XRD and scanning electron microscopy
Raman spectroscopy has been used to characterise both organic and geological samples in order to build a database for the future characterization of biomarker molecules that are of astrobiological relevance. Characteristic geological features and hydrated minerals recently found on the surface of …
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Residual Stress Measurements of Unblasted and Sandblasted Mild Steel Specimens Using X-Ray Diffraction, Strain-Gage Hole Drilling, and Electronic Speckle Pattern Interferometry (ESPI) Hole Drilling Methods
… three different techniques: X-ray diffraction (XRD), strain-gage hole drilling (SGHD), and electronic speckle pattern interferometry (ESPI) hole drilling, and to validate the new ESPI hole drilling method by comparing its measurement results to those produced by the SGHD method. Both the XRD and …
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Nanoscale magnesium as a hydrogen storage material
… using a magnetron sputtering system. SEM and XRD allowed the study of the structures and composition of the Mg and Mg/Ti thin film samples. XRD confirmed a (002) preferential orientation of the films in agreement with literature. Differences in the sputtering conditions of the Mg/Ti samples …
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Development of X-ray Fan Beam Coded Aperture Diffraction Imaging for Improving Breast Cancer Diagnostics
… for diagnosis. In contrast, X-ray diffraction (XRD) is another X-ray measurement modality, one that typically does not produce spatially resolved 2D/3D images, but instead investigates small spatial spots for assessing material properties/molecular structures based on scattered X-rays. While XRD …
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Effects of particles’ size and composition on magnetic properties of substituted ferrite nanoparticles
… electron microscopy (TEM) and X-ray diffraction (XRD). For CuxMn1−xFe2O4, the majority of the XRD peaks were indexed to the cubic spinel phase. However, a small impurity peak at 2θ ≈ 52◦ attributed to α-Fe2O3 and Mn2O3 phases for samples 0.4≤ x ≤ 0.8 was observed. The particle sizes varied between …
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A Study of the Kinetics of Phase Separation in a Nickel-12.5 at.percent Silicon Alloy
… means of in situ wide-angle x-ray diffraction (XRD), small-angle neutron scattering (SANS) and high-resolution wide-angle XRD techniques. The kinetic parameters, i.e. rate constants, governing the growth of the particle size and the volume fraction of the $\gamma\sp\prime$ precipitate are …
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Determination of the synthesis diagram of sodium cobalt oxide and electrochemical study
… four biphasic regions were revealed based on an XRD analysis. The sodium contents in these phases were determined according to the d00j-x relations obtained by an in situ XRD experiment and it is found O3, O3' and P3' phase almost form with only one stoichiometry, that is x=1.00, 0.83 and 0.67 …
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The effect of temperature on phase transformation mechanisms in electrodes for Li-ion batteries
… of a HT in situ synchrotron X-ray diffraction (XRD) battery testing system as well as its application to study two important cathode materials: LiFePO4 and V6O13. This allows unprecedented insights into the structural changes and its influence on electrochemical performance at variable …
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Interrelationships of microstructure, stress and diffusion
… stresses in thin films. X-ray diffraction (XRD) is one of the most frequently used approaches for (residual) stress measurement. It is non-destructive, highly accurate (stress (variation) of some MPa can be detected) and the stress states of all crystalline phases in a layered structure can …
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Sedimentological and mineralogical characteristics of Limpopo River Sand at Beit Bridge Border between South Africa and Zimbabwe
… size of the samples. The X-ray Diffractometer (XRD) analysis identified mineral composition, detecting quartz, feldspar, and other minerals. The petrographic analysis offered detailed mineral component observations, confirming XRD findings. Subsequently the X-ray fluorescence (XRF) analysis …
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Development and characterization of treated kaolin filled polypropylene/kaolin nanocomposites
… Brunauer–Emmett–Teller (BET), X-ray Diffraction (XRD) and Particle Size Analyser and results of both treated kaolin were compared. However, the surface treated kaolin using acidification was unsuccessful as shown by XRD, FTIR and BET results. A successful delamination of micron sized into nano …
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Growth of Single Crystal, Metastable Ge(1-X)sn(x) Alloys and Ge(1-X)sn(x)/ge Strained-Layer Superlattices on Ge(001)2 X 1 by Molecular Beam Epitaxy
… high-resolution x-ray diffraction (HR-XRD) and XTEM results showed that the $\rm Ge\sb{1-x}Sn\sb{x}(001)2x1$ alloy and Ge(001)2x1 spacer layers were commensurate. In fact, the alloy layers were essentially fully strained with an average in-plane lattice constant mismatch of …
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Microwave-assisted Synthesis of Modified Cyclopentadienyl Iridium and Rhodium Chloro-bridged Dimers
… single-crystal X-ray diffraction (XRD) (supplemented by powder XRD), high-resolution mass spectrometry (HRMS), and elemental analysis. Complexes studied by XRD were analyzed to understand the bond lengths and bond angles throughout each complex. The dimeric complexes synthesized, …
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ESIMS targeted synthesis of novel {Pt2S2} derivatives
… 5, 3 and 7 single crystal X- ray diffraction (XRD) studies. 6 was found to be a mixture of isomers, and crystals suitable for a single crystal XRD experiment were not obtained. Both styrene oxide and epibromohydrin underwent ring-opening when reacted with 1b and the respec- tive derivatives …
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Reactivity of Iron-Bearing Minerals Under Carbon Sequestration Conditions
… analyzed post-reaction with X-ray diffraction (XRD) and electron microscopy. XRD results indicated that ferrihydrite reacted completely to form siderite and elemental sulfur after 24 h at 100 °C, while hematite only partially reacted to form siderite and pyrite after 24 h at 70 °C. Additionally, …
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Modelling of the phase change kinetics of cocoa butter in chocolate and application to confectionary manufacturing
… Calorimetry (DSC) and X-Ray Diffraction (XRD) characteristics. This simplification allowed the phase change kinetics to be estimated from a set of DSC experiments conducted at different cooling and heating rates. The phase change reactions were coupled with the heat transfer equation and …
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Interfacial Electrochemistry and Surface Characterization: Hydrogen Terminated Silicon, Electrolessly Deposited Palladium & Platinum on Pyrolyzed Photoresist Films and Electrodeposited Copper on Iridium
… catalysis of formaldehyde. X-ray diffractometry (XRD) is used to ensure that there is little strain on palladium and platinum particles. Iridium is thought to be a prime candidate for investigation as a new generation copper diffusion barrier for the IC industry. Copper electrodeposition on …
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