A Controlled Colloidal Destabilization Approach for the Electrophoretic Deposition (EPD) from Cobalt Ferrite and Magnetite Nanoparticles Suspensions in Diethylene Glycol

Carlo Baldisserri; Davide Gardini; Carmen Galassi

doi:10.4028/www.scientific.net/KEM.507.85

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A Controlled Colloidal Destabilization Approach for the Electrophoretic Deposition (EPD) from Cobalt Ferrite and Magnetite Nanoparticles Suspensions in Diethylene Glycol
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 507A Controlled Colloidal Destabilization Approach...

A Controlled Colloidal Destabilization Approach for the Electrophoretic Deposition (EPD) from Cobalt Ferrite and Magnetite Nanoparticles Suspensions in Diethylene Glycol

Abstract:

Cobalt ferrite (CoFe₂O₄) and magnetite (Fe₃O₄) nanoparticles suspensions in diethylene glycol were tested as candidate systems for the EPD of CoFe₂O₄ and Fe₃O₄. It was found that despite the high stability and high zeta potential of such suspensions and the occurrence of mass transport at the electrode, they are not viable systems for EPD, due to coagulation failure. However, dilution of both suspensions with ethanol caused film coagulation at electric field between 20 and 60 V cm^-1. Combinations of electric field and DEG volume fraction in ethanol/suspension mixtures that allow EPD to take place are detailed, and a description of the outcome of EPD trials is provided. A qualitative discussion of the causes of film consolidation in the presence of ethanol is presented.

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Periodical:

Key Engineering Materials (Volume 507)

Pages:

85-88

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.507.85

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Online since:

March 2012

Authors:

Carlo Baldisserri, Davide Gardini, Carmen Galassi

Keywords:

Cobalt Ferrite, DEG, EPD, Magnetite, Nanoparticle, Polyols

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