The purpose of this study is preparation polyaniline–lead ferrite, polyaniline–cobalt ferrite and polyaniline/nickel thin layers. electromagnetic pollution a serious problem in the world that can be solved by interference (EMI) shielding. EMI layers synthesized conductive layer composed magnetic particles. Crystallite size samples was studied (XRD) analyze via Debye–Scherrer Williamson–Hall equ...

Abstract Considering the promising utility of devices operating for high magnetic fields in noninvasive medical diagnostic applications such as resonance imaging, a microfiber-based magnetometer an extensive dynamic range actuated via NiFe 2 O 4 ferrite fluid is presented and proposed first time this paper. nanoparticles with mean diameter 37 nm (derived from Debye–Scherer’s formula) are prepar...

This article reports on the magnetic properties of interacting uncoated nickel ferrite (NiFe2O4) nanoparticles synthesized through an aerosol levitation-jet technique. A comprehensive set of samples with different compositions of background gas and metal precursors, as well as applied electric field intensities, has been studied. Nanoparticles prepared under a field of 210 kV m(-1) show moderat...

In this research the role of alloying elements on the microstructure and mechanical properties of an as cast and hot rolled high strength low alloy (HSLA) steel was studied. Different compositions with different amount of copper in the presence of nickel, hot rolled and quenched in oil. Tensile test, hardness test, scanning electron microscope (SEM) and optical microscope (OM) were used to eval...

Nanosize Nickel ferrite (NiF) was synthesized by the co-precipitation methods, and its effect as a 5% mass additive studied on thermal decomposition of micrometer nanometer size NTO. In presence NiF additive, peak temperature NTO decreased from 276.36 to 260.18 °C that nanoNTO 261.38 258.89 (β = 10 min−1). The kinetics parameters confirm catalytic activity for NTO, nNTO such activation energy (...

High strength steels Q690+Q550 were welded using three different welding wires without preheating by gas shielded arc welding process. Microstructural characteristics of weld metals and nucleation mechanism of acicular ferrite were investigated by means of scanning electron microscope (SEM), energy dispersive spectrum (EDS) and transmission electron microscope (TEM). The straight Y-groove test ...

The effect of different austenite grain size and different cooling rates on the austenite to ferrite transformation temperature and different ferrite morphologies in one Nb-microalloyed (HSLA) steel has been investigated. Three different austenite grain sizes were selected and cooled at two different cooling rates for obtaining austenite to ferrite transformation temperature. Moreover, samples ...