نتایج جستجو برای: modified williamson hall method
تعداد نتایج: 1891343 فیلتر نتایج به سال:
Finite crystallite size and strain in polycrystalline material led to broadening of the diffraction lines. By analyzing this broadening, it is possible to extract information on the microstructure of crystalline material. In this research, we obtained the microstructure of nanocrystalline CeO2 sample using synchrotron diffraction data, applying the whole powder pattern fitting and Williamson-Ha...
In this work, the impact of nonstoichiometric substitution Fe3+ cations by Ni2+ ones on structural and magnetic properties Co0.5Ni0.5+xFe2−xO4 nanoferrites (0.0 ≤ x 0.4) synthesized citric autocombustion method has been investigated. The single cubic phase for samples sintered at 600 °C was verified XRD patterns FTIR spectra. crystallite size microstrain were deduced using Williamson-Hall metho...
Metal parts produced by Additive Manufacturing, and in particular Laser Powder Bed Fusion (LPBF), suffer from residual stresses due to high thermal gradients causing cyclic expansion contraction of the alloy. This work deals with determination stress rapidly solidified AlSi10Mg samples using two non-destructive techniques: Raman spectroscopy, rapid, unconventional but applicable AlSi alloys, XR...
In the present study, pure Aluminum powder with 5%wt Titanium Dioxide was mechanically milled at different times. Using phase analysis through X-ray diffraction (XRD), it was found that increasing of the milling times over 10 hours causes the reduction of Titanium by Aluminum and formation of Al2O3 in the structure. Also, it was shown that if the process persists, Aluminum reacts with Titanium ...
In this paper TiB2-TiC/Ni cermet with various Ni (20, 40 and 60 wt %) content were synthesized by mechanically activated self-propagating synthesis (MASHS) and effect of the addition of Ni on synthesis parameters and microstructure of synthesized samples were investigated. First raw materials (B4C, Ti and Ni) milled in Ar atmosphere. Then milling powders analyzed by XRD. In next step powders sy...
ABSTRACT: In this paper, a complete construction of quaternary complex Hadamard matrices of order 2 n is obtained using the method of Sylvester construction and Williamson construction. Williamson construction has been generalized to obtain any kind of Hadamard matrices (Complex or Real Numbers). Non-equivalent family of Hadamard Matrices can be obtained using the Generalized Williamson constru...
T The nanostructures of Fe2O3 have been synthesized applying sour cherry juice and iron chloride as a low-cost and eco-friendly method at ambient conditions. Sour cherry juice has been used as a surfactant and the kind of surfactant had an important effect on the size and morphology of the products. The effect of sour cherry juice concentration and calcination temperature...
An effect of activation with nanosized particles Fe 3 O 4 on structural and magnetic properties zinc-tellurite glasses 20·ZnO-(80-x)·TeO 2 -x·Fe (x=0, 1, 3, 7), prepared melt-quenching method, have been investigated. Some functional the were experimentally investigated X-ray diffraction, Energy dispersive Raman spectroscopies, SQUID magnetometry. The values average crystallite sizes calculated ...
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