The possibility of obtaining nanocrystaline lead sulfide by an electrolytic method using electrodes is demonstrated, and the influence temperature on synthesis process investigated. Based results X-ray diffraction studies, chemical phase composition obtained samples determined, as well parameters unit cell crystals lattice. size nanocrystallites magnitude residual mechanical strain in them dete...

Recent studies on the mechanical behavior of martensitic steels show importance considering lath martensite as a “polycrystalline aggregate” with large distribution local yield strength. The latter depends microstructural features, such sizes, carbon (in solid solution, segregated to defects, in carbides) and density defects Internal stresses have be considered an additional contribution streng...

Nanocrystalline silicon embedded carbide, nc-Si(SiC) thin films were deposited on p-type substrates by using a thermal chemical vapor deposition (CVD) with different process temperatures from 700 to 1000 °C. The SEM images reveal the Si particles are SiC films. estimated crystallite size of was varied 14 28 nm and 40.7 61 respectively Scherrer formula Williamson – Hall formula. Similarly, latti...

The SDS, PEG and CTAB roofed MgO nano powders were synthesized by co-precipitation method.  The sintered nano powders was shown Fm-3m space group with cubic phase obtained by the XRD pattern. The lattice strain was calculated to be used Williamson-Hall equations (W-H). The formation of Mg-O bond and hydroxyl radicals on the surface were confirmed by the FTIR analyses. The TEM revealed that the ...

Abstract Ball-milled nanocrystalline Mg powders catalyzed by TiO 2 powder, titanate nanotubes and carbon were subjected to intense plastic deformation equal-channel angular pressing. Microstructural characteristics of these nanocomposites have been investigated X-ray diffraction. parameters, such as the average crystallite size, dislocation density distance determined modified Williamson–Hall a...

The growth of precipitates in a deformed Cu Ni Si alloy with an aging treatment and the rearrangement of dislocations were investigated using X-ray scattering methods. A small angle X-ray scattering (SAXS) method was used for characterizing the growth behavior of the precipitates with aging. The results showed that the precipitates grew gradually to a few nanometers in radius in the alloy aged ...

In this work, copper oxide nanoparticles have been synthesized via extractive Rosmarinus Officinalis leaves by simple and economic co-precipitation method at ambient conditions which it has used (CH3COO)2Cu+H2O individually as Cu sources. It was found that uniform copper oxide nanoparticles have been successfully produced at various temperature, namely 400, 600, and 800 0C. Powder X-ray Diffrac...

The overwhelming impact of complex-phase microstructures to mechanical response in multiphase steels requires accurate constitutive properties the individual phases. However, precise prediction phase their is critical and sophisticated, commonly multiscale characterizations numerous approximations. In this work, by employing full information semi-empirical analytical models, we accurately predi...

The density and the character of dislocations and the size-distribution of grains or subgrains were determined by a new procedure of X-ray diffraction (XRD) profile analysis in copper specimens deformed by equal channel angular pressing (ECA) or cold rolling. The anisotropic strain broadening of diffraction profiles was accounted for by dislocation contrast factors. The screw or edge character ...