The influence of the Synthesis Conditions of NiCuZn Ferrites on their Microscopic Homogeneity

D. Sakellari; V. Tsakaloudi; V.T. Zaspalis; Efstathios K. Polychroniadis

doi:10.4028/www.scientific.net/DDF.283-286.483

Paper Titles

Influence of Strain Rate and Strain on the Surface Properties in Superplastically Boronized Duplex Stainless Steel (DSS)
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Selective Oxidation of Low Alloyed Ferritic Steels
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Influence of Diffusion in the Underlying Metal during Oxidation of Iron Containing Small Amounts of Copper and Nickel
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Numerical Study of Melting/Solidification by a Hybrid Method Coupling a Lattice Boltzmann and a Finite Volumes Approaches
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The influence of the Synthesis Conditions of NiCuZn Ferrites on their Microscopic Homogeneity
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Diffusion Transport in Electrochemical Systems: A New Approach to Determining of the Membrane Potential at Steady State
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The Influence of Milling Time and Impact Force on the Mutual Diffusion of Al and Cu during Synthesis of Al-4.5wt%Cu Alloy via Mechanical Alloying
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Effect of SiC Particles Volume Fraction on the Mutual Diffusion of Al and Cu during Fabrication of Al-4.5wt%Cu/SiC via Mechanical Alloying
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An Indirect Approach for Correlation of Permeability and Diffusion Coefficients
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The influence of the Synthesis Conditions of NiCuZn Ferrites on their Microscopic Homogeneity

Abstract:

The present work investigates the influence of the synthesis conditions of specific ferrites (Ni0,30Cu0.07Zn0,63)Fe2O4, prepared with the mixed oxide process, on their microstructural homogeneity. Segregation was found inside the grains, in the form of clustering or compositional modulation. Both types of segregation, which are not observed in all grains or all samples, seem to be related to the stress of the material as well as the specific orientation of the individual grains, where the segregation appeared. The reason for this assumption, which will be discussed, is that after annealing, where stress relaxation takes place, the segregation completely disappeared.