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Use of the Retarded Solution‐Reprecipitation Process to Attain a Higher Initial Permeability in MnZn Ferrites
Author(s) -
Drofenik Miha,
Žnidaršič Andrej,
Makovec Darko
Publication year - 2003
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2003.tb03522.x
Subject(s) - microstructure , sintering , materials science , ferrite (magnet) , permeability (electromagnetism) , liquid phase , phase (matter) , composite material , metallurgy , thermodynamics , chemistry , physics , biochemistry , organic chemistry , membrane
We investigated the effect of various amounts of liquid phase on microstructure development during sintering and the resulting magnetic permeability of MnZn ferrite (MZF) samples. Our results revealed that the microstructure and the final magnetic permeability depend on the thickness of the liquid‐phase film during sintering. The solution‐reprecipitation (S‐R) process, which is associated with an intensive microstructure development in MZF, starts when a continuous liquid‐phase film of critical thickness δ o , which wets the MZF grains, is formed. The solid‐state sintering that takes place before the formation of the continuous liquid‐phase film is essential for the final microstructure of MZF.