%0 Journal Article
%T Sintering of Cermets: A Case Study of Sintering Ni每Co Ferrite with Ag-, Cu- and Ni-Dispersed Alloy Particles
%A Eduardo de Oliveira Silva
%A Jessica Aparecida Nascimento Ferreira
%A Joˋo Paulo Barros Machado
%A J迆nior
%A Mˋnica Sumie Hieda
%A Vera L迆cia Oth谷ro de Brito
%J Ceramics | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/ceramics2010017
%X Literature has shown that the development of ferrite cermets makes possible the enhancement of the mechanical properties of these ceramics for applications in electronics, magnetomechanical sensors, and inert anodes. In this work, a Ni每Co ferrite powder was mixed with metallic powders, compacted, and sintered. The metallic powders used were Ag每Ni and Cu每Ni, prepared by mechanical alloying, and commercial Ag and Ag每Cu powders. The microstructures, crystal structures, and chemical compositions of the sintered samples were analyzed. The Cu每Ni cermet did not present traces of second phases in its XRD pattern, and the experimental results indicate a high reactivity between the ferrite and the Cu每Ni alloy. In the Ag每Cu and Ag每Ni cermets, the composition of the metallic particles was nearly 100% Ag after sintering. It was observed that, for the production of ferrite particulate cermets, the composition, particle size, and melting point of the metallic phase must be carefully adjusted in order to obtain a material with proper chemical composition and microstructure (uniform distribution of the metallic phase and no cracks in the metal每ceramic interfaces). View Full-Tex
%U https://www.mdpi.com/2571-6131/2/1/17