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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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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Effect of Sintering Holding Time and Cooling Rate on the Austenite Stability and Mechanical Properties of Nanocrystalline FeCrC Alloy [PDF]
Archives of Metallurgy and Materials, 2021 The effects of the sintering holding time and cooling rate on the microstructure and mechanical properties of nanocrystalline Fe-Cr-C alloy were investigated. Nanocrystalline Fe-1.5Cr-1C (wt.%) alloy was fabricated by mechanical alloying and spark plasma
Gwanghun Kim +6 more
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Metals, 2019 The corrosion resistance of a SA106B carbon steel with a gradient nanostructure fabricated by rotationally accelerated shot peening (RASP) for 5, 10, 15 and 20 min was investigated.
Chaonan Lei +4 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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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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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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Nanocrystalline apatites: From powders to biomaterials [PDF]
, 2009 Non-stoichiometric nanocrystalline apatite powders are used to elaborate highly-bioactive biomaterials. Their exceptional surface reactivity arises from a structured but rather unstable hydrated layer involving ions in nonapatitic chemical environments ...
Estournès, Claude +8 more
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