Nanocrystalline materials studied by powder diffraction line profile analysis [PDF]
, 2007 X-ray powder diffraction is a powerful tool for characterising the microstructure of crystalline materials in terms of size and strain. It is widely applied for nanocrystalline materials, especially since other methods, in particular electron microscopy ...
Gubicza, Jenő, Ungár, Tamás
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Plastic deformation of dense nanocrystalline yttrium oxide at elevated temperatures [PDF]
, 2012 Nanocrystalline yttrium oxide, Y2O3 with 110 nm average grain size was plastically deformed between 800 ◦C and 1100 ◦C by compression at different strain rates and by creep at different stresses. The onset temperature for plasticity was at 1000 ◦C. Yield
Estournès, Claude +4 more
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Hot pressing of nanocrystalline TiO2 (anatase) ceramics with controlled microstructure [PDF]
, 2007 The preparation conditions of nanocrystalline phase-pure TiO2 anatase ceramics by hot pressing are described. Density, surface area, pore size distribution and grain size are determined by various techniques, including gas adsorption, mercury porosimetry,
Weibel, Alicia +3 more
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Uncertainty propagation in a multiscale model of nanocrystalline plasticity [PDF]
, 2010 We characterize how uncertainties propagate across spatial and temporal scales in a physicsbased model of nanocrystalline plasticity of fcc metals. Our model combines molecular dynamics (MD) simulations to characterize atomic level processes that govern ...
Strachan, Alejandro +9 more
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Characterization of defect structures in nanocrystalline materials by X-ray line profile analysis [PDF]
, 2007 X-ray line profile analysis is a powerful alternative tool for determining dislocation densities, dislocation type, crystallite and subgrain size and size-distributions, and planar defects, especially the frequency of twin boundaries and stacking faults.
Tamás Ungár +3 more
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Sintering and densification of nanocrystalline ceramic oxide powders: a review [PDF]
, 2008 Observation of the unconventional properties and material behaviour expected in the nanometre grain size range necessitates the fabrication of fully dense bulk nanostructured ceramics.
Levin, M. +3 more
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In-situ TEM observation of the response of ultrafine- and nanocrystalline-grained tungsten to extreme irradiation environments [PDF]
, 2014 The accumulation of defects, and in particular He bubbles, can have significant implications for the performance of materials exposed to the plasma in magnetic-confinement nuclear fusion reactors. Some of the most promising candidates for deployment into
Greaves, Graeme +10 more
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Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess [PDF]
, 1994 Co-Ti-Sn-Ge substituted M-type bariumhexaferrite powders with mean grain sizes between about 10 nm and about 1 ¿m and a narrow size distribution were prepared reproducibly by means of a modified glass crystallization method.
Gornert, P. +29 more
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Mechanochemical Synthesis of Nanocrystalline Olivine-Type Mg2SiO4 and MgCoSiO4
Crystals, 2022 Nanocrystalline olivine-structured Mg2SiO4 and MgCoSiO4, with an average particle size of 27 nm and 31 nm, respectively, were successfully synthesized from oxide precursors via mechanochemical methods. The two nanocrystalline products were obtained after
Phuong Q. H. Nguyen +6 more
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Influence of sintering temperature and pressure on crystallite size and lattice defect structure in nanocrystalline SiC [PDF]
, 2007 Microstructure of sintered nanocrystalline SiC is studied by x-ray line profile analysis and transmission electron microscopy. The lattice defect structure and the crystallite size are determined as a function of pressure between 2 and 5.5 GPa for ...
T. Ungár +11 more
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