In this work, we analyze artificial heavy-metal solutions with ferrite nanoparticles. Measurements of adsorption effectiveness of different kinds of particles, pure magnetite or magnetite doped with calcium, cobalt, manganese, or nickel ions, were carried out. A dependence of the adsorption efficiency on the composition of the inorganic core has been observed. Ferrites surfaces were modified by...

In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe2O4)/SiO2 and Manganese doped cobalt ferrite nanoparticles (MnxCo1-xFe2O4 with x= 0.02, 0.04 and 0.06)/SiO2 for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl3.6H2O, CoCl2.6H2O and MnCl2.2H2O as precursors, and were silica coated ...

In this study, first a hydrogel based on sodium alginate and acrylamide was prepared by radical polymerization method then manganese oxide formed in its lattice structure nanocomposite hydrogels were obtained. the next step, Nanocomposite used as catalysts for oxidation of alcohols. To evaluate physical properties confirm hydrogels, Hydrogel swelling tests, FT-IR infrared conversion spectroscop...

Glycine assisted self-combustion method resulted in fabrication of cobalt-manganese ferrite substituted by zinc ( Zn ) element. The as-synthesized Co-Mn was subjected to heat treatment at 600?C and 800?C for 2h. Effects on the structural, morphological, surface magnetic properties ZnCoMn were studied. These characterized using various techniques including TGA-DTGA, FTIR, XRD, SEM, EDX, TEM VSM....

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 ...

The objective of this program is to develop the knowledge and technology necessary to take full advantage of the unidirectional attenuative properties of ferrites in achieving improved gain and bandwidth in crossed-field microwave amplifiers and oscillators. During this fourth quarterly period, activities included further cold testing of ferrite materials in the L-band cold test vehicle and in ...

the effect of ferrite grain size on the fatigue and tensile properties of dual phase steels with a 0.25 volumefraction of martensite (vm) under different heat treatments was investigated. the heat treatments werehomogenized at 1200 oc along with several subsequent normalizations at 910 oc, resulting in differentmicrostructures and mechanical properties. after heat treatment, the obtained steels...