Relevant bibliographies by topics / Material characterisation: SEM/EDS/EBSD

Academic literature on the topic 'Material characterisation: SEM/EDS/EBSD'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Material characterisation: SEM/EDS/EBSD"

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Stephenson, Oscar, Rebecca L. Higginson, Simon Hogg, Jacob Knight, and Sarah Spindler. "Characterisation of Long Term Aging in Esshete 1250 Welds." Materials Science Forum 941 (December 2018): 589–94. http://dx.doi.org/10.4028/www.scientific.net/msf.941.589.

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In this work, two samples of service grade Esshete 1250 stainless steel, as-received and aged, were characterised to determine the microstructural differences between the parent material and weld in terms of the grain structures and the phases present using XRD, EBSD, SEM and EDS. There was no difference found in the grain structure, but the phases present in the aged weld showed that sigma phase developed during aging.
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Rößler, Christiane, Dominik Zimmer, Patrick Trimby, and Horst-Michael Ludwig. "Chemical – crystallographic characterisation of cement clinkers by EBSD-EDS analysis in the SEM." Cement and Concrete Research 154 (April 2022): 106721. http://dx.doi.org/10.1016/j.cemconres.2022.106721.

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Parish, Chad M. "Cluster Analysis of Combined EDS and EBSD Data to Solve Ambiguous Phase Identifications." Microscopy and Microanalysis 28, no. 2 (March 3, 2022): 371–82. http://dx.doi.org/10.1017/s1431927622000010.

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A common problem in analytical scanning electron microscopy (SEM) using electron backscatter diffraction (EBSD) is the differentiation of phases with distinct chemistry but the same or very similar crystal structure. X-ray energy dispersive spectroscopy (EDS) is useful to help differentiate these phases of similar crystal structures but different elemental makeups. However, open, automated, and unbiased methods of differentiating phases of similar EBSD responses based on their EDS response are lacking. This paper describes a simple data analytics-based method, using a combination of singular value decomposition and cluster analysis, to merge simultaneously acquired EDS + EBSD information and automatically determine phases from both their crystal and elemental data. I use hexagonal TiB2 ceramic contaminated with multiple crystallographically ambiguous but chemically distinct cubic phases to illustrate the method. Code, in the form of a Python 3 Jupyter Notebook, and the necessary data to replicate the analysis are provided as Supplementary material.
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Schulz, Bernhard, Dirk Sandmann, and Sabine Gilbricht. "SEM-Based Automated Mineralogy and Its Application in Geo- and Material Sciences." Minerals 10, no. 11 (November 11, 2020): 1004. http://dx.doi.org/10.3390/min10111004.

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Scanning electron microscopy based automated mineralogy (SEM-AM) is a combined analytical tool initially designed for the characterisation of ores and mineral processing products. Measurements begin with the collection of backscattered electron (BSE) images and their handling with image analysis software routines. Subsequently, energy dispersive X-ray spectra (EDS) are gained at selected points according to the BSE image adjustments. Classification of the sample EDS spectra against a list of approved reference EDS spectra completes the measurement. Different classification algorithms and four principal SEM-AM measurement routines for point counting modal analysis, particle analysis, sparse phase search and EDS spectral mapping are offered by the relevant software providers. Application of SEM-AM requires a high-quality preparation of samples. Suitable non-evaporating and electron-beam stable epoxy resin mixtures and polishing of relief-free surfaces in particles and materials with very different hardness are the main challenges. As demonstrated by case examples in this contribution, the EDS spectral mapping methods appear to have the most promising potential for novel applications in metamorphic, igneous and sedimentary petrology, ore fingerprinting, ash particle analysis, characterisation of slags, forensic sciences, archaeometry and investigations of stoneware and ceramics. SEM-AM allows the quantification of the sizes, geometries and liberation of particles with different chemical compositions within a bulk sample and without previous phase separations. In addition, a virtual filtering of bulk particle samples by application of numerous filter criteria is possible. For a complete mineral phase identification, X-ray diffraction data should accompany the EDS chemical analysis. Many of the materials which potentially could be characterised by SEM-AM consist of amorphous and glassy phases. In such cases, the generic labelling of reference EDS spectra and their subsequent target component grouping allow SEM-AM for interesting and novel studies on many kinds of solid and particulate matter which are not feasible by other analytical methods.
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Zasada, Dariusz, Wojciech Polkowski, and Robert Jasionowski. "Analysis of the Effect of the Wearing Type on Surface Structural Changes of Ni3Al-Based Intermetallic Alloy." Solid State Phenomena 225 (December 2014): 25–32. http://dx.doi.org/10.4028/www.scientific.net/ssp.225.25.

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Results of an analysis of effect of wearing type on surface structural changes of a Ni3Al intermetallic alloy, are shown in the present paper. A microstructure evaluation was carried out by Quanta 3D FEG field emission gun scanning electron microscope (FEG SEM) equipped with an integrated EDS/WDS/EBSD system. The Ni3Al-based intermetallic alloy with an addition of boron, zirconium and chromium was examined. The investigated material had γ’ single-phase, ordered solid solution structure with 20 μm grain size. An electron backscatter diffraction (EBSD) method was applied to visualize surface structural changes upon an abrasive, a cavitational and a tribological wearing of the material.An observation of surface layer after the abrasive wear was carried out on samples examined in loose abradant by T-07 tester and according to GOST 23.2008-79 norm. An analysis of cavitational wear on changes in the near surface area of Ni3Al-based alloy was performed on an impact-jet stand. Observed structural changes were described based on results of the SEM/EBSD complex structural examination and hardness measurements. It was found, that the EBSD is an effective and sensitive method that allows estimating surface strain introduced during analyzed wearing types.
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Kejzlar, Pavel, Tomáš Pilvousek, and Michal Tregler. "Determination of DC06+ZE Sheet Crack Cause." Defect and Diffusion Forum 368 (July 2016): 121–25. http://dx.doi.org/10.4028/www.scientific.net/ddf.368.121.

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The present work deals with determination of the cause of crack occurring in a part of car body manufactured from deep-drawing sheet. UHR-SEM, EDS, EBSD and measurement of microhardness were used for evaluation of the structure, local deformation and crack formation mechanism. A material analysis discovered foreign particles in the material. These particles were identified as MgAl2O4 with BCC lattice. The occurrence of these hard particles led to local stress concentration, decrease in mechanical strength and sheet breach due to tensile stress during deformation.
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Drawin, Stefan, Virgil Malard, Anne Denquin, Jean Philippe Monchoux, and Alain Couret. "From Pre-Alloyed Rod to Gas-Atomized Powder and SPS Sintered Samples: How the Microstructure of an Nb Silicide Based Alloy Evolves." Materials Science Forum 941 (December 2018): 1264–69. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1264.

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This work investigates the evolution of the microstructure of an Nb-23Ti-20Si (at.%) based alloy, from the primary plasma-melted material that is gas-atomized towards the consolidated material (here using SPS). The nature, morphology and size of the solid solution and the various silicides are followed by SEM, EDS and EBSD. Homogenous and fine microstructures are obtained after the SPS step and are improved by a subsequent heat treatment (1500°C, 100 h). However blocky silicides, already present in the powder particles, cannot be eliminated. A better control of the primary material’s microstructure would improve the microstructure of the final material.
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Higginson, R. L., G. D. West, and M. A. E. Jepson. "The Characterisation of Oxide Scales Grown on Nickel Containing Steel Substrates Using Electron Backscatter Diffraction." Materials Science Forum 539-543 (March 2007): 4482–87. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.4482.

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The oxidation of steels is critically influenced by its constituent alloying elements. These alter the classical three-phase model of the external oxide scales and in addition can introduce internal oxidised regions. This paper considers the oxidation of a number of nickel containing Fe based alloys of varying compositions, including stainless steel. These have been oxidised under different conditions to produce a number of scale morphologies, which have been characterised using two SEM based techniques; Electron Backscatter Diffraction (EBSD) and Energy Dispersive x-ray Spectroscopy (EDS). Results have shown that nickel promotes the formation of a fibrous internal scale, consisting of iron oxide particles (or iron/chromium oxide in the case of stainless steel) along grain boundary regions. Nickel is rejected from these oxide particles and consequently nickel content is enriched in neighbouring metallic areas.
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Wendler, Bogdan, Łukasz Kaczmarek, M. Jachowicz, and A. Rylski. "Oxidation Resistance of Nanocrystalline Microalloyed γ–TiAl Coatings under Isothermal Conditions and Thermal Fatigue." Materials Science Forum 513 (May 2006): 135–48. http://dx.doi.org/10.4028/www.scientific.net/msf.513.135.

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γ-titanium aluminide a promising structural material for automotive and aircraft applications at high temperatures suffers from poor gas corrosion resistance. It has been proved in this work by means of microthermogravimetry and SEM, EDS, EBSD and X-Ray diffraction carried out and under isothermal conditions and thermal cycling that a great improvement of the oxidation resistance of this material can be achieved due to magnetron sputtered coatings of γ-TiAl with vatious additions (Ag, Cr, Mo, Nb, Si or Ta) or their combinations. The oxidation rate of some of these coatings is four orders of magnitude smaller than that of the bare γ-TiAl substrate.
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Reshma, C., and J. Mary Gladis. "Synthesis and Characterisation of Ternary Nanocomposites as Cathode Material for Lithium-Sulphur Batteries." Materials Science Forum 830-831 (September 2015): 604–7. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.604.

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The lithium-sulphur (Li-S) system is one of the most promising candidates for high energy density applications. Sulphur has several drawbacks such as poor conductivity, large volumetric expansion upon lithiation, dissolution of the intermediate polysulfides during charge-discharge processes. The objective of the present work is to prepare a ternary composite of MWCNT/S/conducting polymer system with unique characteristics to be used as a cathode material for lithium sulphur batteries. The synthesis has been carried out in two steps. Sulphur is introduced onto the surface of MWCNT by the chemical reaction between sodium thiosulphate and hydrochloric acid. In the second step, polyindole is produced by insitu reaction from indole monomer by using FeCl3 as oxidising agent. The MWCNT and conducting polymer help to improve the conductivity of sulphur. The composite material is characterised by TGA, FTIR, SEM-EDS and XRD analysis. The polyindole formation is confirmed by using FTIR and SEM-EDS. Electrochemical studies have been performed to demonstrate MWCNT/sulphur/polymer composites as a cathode material for rechargeable lithium –sulphur batteries.
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Dissertations / Theses on the topic "Material characterisation: SEM/EDS/EBSD"

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Thomas, Jonova. "Microstructural Phase Evolution In Laser Deposited Compositionally Graded Titanium Chromium Alloys." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849610/.

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A compositionally graded Ti-xCr (10≤x≤30 wt%) alloy has been fabricated using Laser Engineered Net Shaping (LENSTM) to study the microstructural phase evolution along a compositional gradient in both as-deposited and heat treated conditions (1000°C followed by furnace cooling or air cooling). The alloys were characterized by SEM BSE imaging, XRD, EBSD, TEM and micro-hardness measurements to determine processing-structure-property relations. For the as-deposited alloy, α-Ti, β-Ti, and TiCr2 (C15 Laves) phases exist in varying phase fractions, which were influential in determining hardness values. With the furnace cooled alloy, there was more homogeneous nucleation of α phase throughout the sample with a larger phase fraction of TiCr2 resulting in increased hardness values. When compared to the air cooled alloy, there was absence of wide scale nucleation of α phase and formation of ω phase within the β phase due to the quicker cooling from elevated temperature. At lower concentrations of Cr, the kinetics resulted in a diffusionless phase transformation of ω phase with increased hardness and a lower phase fraction of TiCr2. In contrast at higher Cr concentrations, α phase separation reaction occurs where the β phase is spinodally decomposed to Cr solute-lean β1 and solute-rich β2 resulting in reduced hardness.
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Book chapters on the topic "Material characterisation: SEM/EDS/EBSD"

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de Kloe, René, Hubert Schulz, and Felix Reinauer. "Advances in 3-dimensional material characterisation using simultaneous EDS and EBSD analysis in a combined FIB-SEM microscope." In EMC 2008 14th European Microscopy Congress 1–5 September 2008, Aachen, Germany, 675–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85156-1_338.

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Conference papers on the topic "Material characterisation: SEM/EDS/EBSD"

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Sonmez, Maria, Mircea Juganaru, Anton Ficai, Denisa Ficai, Ovidiu Oprea, Dana Gurau, Laurentia Alexandrescu, et al. "Dolomite surface modification with titanium and silicon precursors and its morphostructural and thermal characterisation." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.i.13.

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The aim of the paper is to modify the surface of dolomite with titania (TiO2) and silica (SiO2) precursors, in order to use it as a potential reinforcement material in a polymeric matrix or for environmental applications (photocatalyst for the degradation of organic pollutants based on TiO2). The dolomite surface modification was performed by 2 methods. The first method consisted in modifying the direct dolomite surface with SiO2 and TiO2. The second method consisted in the initial treatment of dolomite with TEOS, in order to form silanol bonds, followed by the addition of SiO2 and TiO2 precursors. The obtained powders were characterized by FTIR, SEM-EDS and DSC-TG. The FTIR spectra prove the formation of the silica network while the samples modified with PDMS exhibit the characteristic peaks of methyl groups from PDMS. In EDS, the presence of the characteristic elements of dolomite (calcium, magnesium, oxygen and carbon) can be observed. When analyzing the modified dolomite powders the presence of titanium and silicon can be observed. The characteristic morphology of the dolomite is preserved in all the samples but, the surface of the larger particles is decorated with smaller particles proving the functionalization of the dolomite, according to the two routes. The thermal analysis is characteristic for dolomite-based materials, the main difference between the samples appearing as a consequence of the burning of the organic part of PDMS, which occur between 400 and 600°C.
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