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Effect of impact energy on the formation of nanocrystalline powders in Cu- 50 % Fe immiscible alloy system

Vaezi M.R., Mir Shah Ghassemi S.H., Shokuhfar A.

Materials Science Poland

2008

Vol. 26, No. 3

602--608

The study of mechanical alloying in the Cu–Fe system, as a model system for those with positive heats of mixing, has been investigated. The effects of impact force which pertains to ball-to-powder ratio, rotation speed and milling time, on the strain and grain size of final powders have been studied. The aim of this research was to find the optimum condition for mechanical alloying of Cu–Fe system by the automatic design and analysis of Taguchi experiments. X-ray diffraction (XRD) was used to analyze the effect of incoming energy on the diffusion rate.

Synthesis of Zn2TiO4 and ZnTiO3 nanocomposites by the CBD method

Vaezi M. R., Esmaielzadeh Kandjani A., Nikzad L., Arefian N. A., Alibeigi S., Farzalipour Tabriz M., Mir Shah Ghassemi S. H., Samei J.

Materials Science Poland

2007

Vol. 25, No. 4

1109--1117

Zn2TiO4/ZnTiO3 nanopowders were synthesized via CBD method. TiCl4, ZnCl2 and NaOH were used as precursors. The effect of temperature was investigated on morphologies and compositions of final product. The calcinations of the samples were carried out at 630 oC. The structures and morphologies of the products were studied by X-ray diffraction and scanning electron microscopy. The results show that the best temperature for fabrication of the compounds without ZnO is 25 oC.