Preparation And Characterization Of Iron Series Alloy Nanostructured Materials

The physical and chemical properties of such objects depend on their shape and particle size. Since a lot of applications of ultrafme amorphous alloy particles have been found in magnetic recording, catalysis, sensor components, and powder metallurgy, etc., much attention has been paid to the synthesis process of nanostructured Fe series alloy.The theory of preparing nanostructured alloy in a liquid solution: In the same condition, the reducing agent can simultaneously reduce two or more soluble metal-salt to metal, then with the adding up of reducing agent, the metal-salt is reduced to nanostructured alloy.Fe-Ni alloy whiskers were prepared in a mixed solution of ferrous and nickelous salts, using KBH4 as a reducing agent. X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Differential Thermal Analysis (DTA) and Vibrating Sample Magnetometer (VSM) characterized the synthesized Fe-Ni alloy whiskers. Fe-Ni alloy are important soft magnetic materials and they exhibited superparamagnetization at room temperature that have been widely used in industry. Nanostructured Fe-Ni alloys have been particularly emphasized because of their high permeability, low coercive force and relatively high saturation magnetization. The composition and Size distrbution of particles for Fe-Ni alloy will change as Fe/Ni ratio; When Fe/Ni <0.5 , the size of particles for Fe-Ni alloy which are reduce as the Fe/Ni ratio raise. When Fe/Ni >0.5 , the size of particles for Fe-Ni alloy which are increase as the Fe/Ni ratio raise; When Fe/Ni =0.5, the size of particles for Fe-Ni alloy is small. It is find that Fe-Ni component is normalization by measure of magnetic parameters which are increase as the Fe/Ni ratio raise.Nanosrtuctured Fe-Co whiskers were synthesised by chemical reduction in water-ethanol liquid solution at first. X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Differential Thermal Analysis (DTA) and Vibrating Sample Magnetometer (VSM) characterized the synthesized Fe-Co alloy whiskers. The composition and Size distrbution of particles for Fe- Co alloy will change as Fe/ Co ratio; When Fe/ Co <1.5 , the size of particles for Fe-Co alloy which are reduce as the Fe/Ni ratio raise. When Fe/ Co >1.5 , the size of particles for Fe-Coalloy which are increase as the Fe/Co ratio raise;When Fe/Co =1.5, the size of particles for Fe-Co alloy is small. It is find that Fe-Co component is normalization by measure of magnetic parameters which are increase as the Fe/Co ratio raise.It is well known that the thermal and electrical conductivities of Copper is better. One of the greatest challenges facing the microelectronics industry is the thermal expansion mismatch among the materials used in electronic devices and components. Fe-Cu,Co-Cu, Ni-Cu, Fe-Co-Cu, Fe-Ni-Cu, Co-Ni-Cu, Fe-Co-Ni-Cu were synthesised by Chemical reduction, in order to enhanced the thermal and electric conductivities of Fe-series alloy. The saturation magnetization of Cu-Iron series alloy, but they are nanosized materials, coercive force is zero, they exhibited superparamagnetization at room temperature and good soft magnetic materials.