Author:
Dias Anderson,Buono Vicente Tadeu Lopes
Abstract
The influence of the starting materials on the crystalline phases observed after hydrothermal synthesis of nickel and manganese-zinc ferrites was investigated. The combination of sulfates and sodium hydroxide showed the best results for the conditions studied. The morphological parameters of MnZn ferrites produced at different hydrothermal conditions (110–190 °C, 4–30 h) were analyzed. Changes in lattice parameter, particle size, density, size and total volume of pores, and in the surface area of the particles were analyzed as a function of temperature and processing time. The sintering process was employed in order to verify the reactivity of the hydrothermal powders at controlled atmosphere. High density and surface homogeneous ceramic bodies were obtained, without zinc volatilization. Lattice parameter variations were associated with changes in the cations distribution of the spinel during sintering.
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference30 articles.
1. 22. Stambaugh E. P. , Dawson W. J. , Adair J. H. , and Kim B. C. , Technology for new/improved hydrothermal processes, Batelle Handbook (Dec. 1984).
2. Microstructure and properties of Ni-Zn ferrites sintered from slip cast colloidally precipitated particles
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