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Characterisation of the deagglomeration behaviour of nanoscaled barium hexaferrite powders by measurement of electrokinetic effects
Author(s) -
Mahr P.,
Halbedel B.
Publication year - 2006
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200600081
Subject(s) - electrokinetic phenomena , zeta potential , materials science , barium , agglomerate , barium ferrite , polymer chemistry , aqueous solution , chemical engineering , composite material , chemistry , nanotechnology , nanoparticle , metallurgy , ferrite (magnet) , engineering
Single crystalline barium hexaferrite crystals form very firm and relatively large particle agglomerates. The fabrication of composites and coatings require isolated crystals. For it is necessary to know their deagglomeration behaviour. In this paper we present the zeta potential in dependence on the pH ‐ value of three several modified barium hexaferrite powders which dispersed in aqueous media. The zeta potential describes the extension of the electrical layer and the surface barrier of suspended particles and gives information to prepare singularized barium hexaferrite particles in aqueous media.