An analysis of current transients during electrophoretic deposition (EPD) from colloidal TiO2 suspensions

Baldisserri, Carlo; Gardini, Davide; Galassi, Carmen

doi:10.1016/j.jcis.2010.03.034

Cited by 28 publications

(19 citation statements)

References 19 publications

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“…In our EPD tests the conductivity of the suspension was reduced as much as possible in order to diminish the effect of secondary reactions at the workelectrode (current transients, overpotentials, etc.) [19]. Moreover, a planar geometry was fixed, as well as polished substrates were used to identify the geometric area with the conductive surface area.…”

Section: Epd Of Steric Stabilized Nano-tin Suspensionsmentioning

confidence: 99%

“…Most of the time, the geometric surface of the working electrode or substrate is considered, neglecting the surface of conduction or the cumulative charge effect in edges and peaks. So, the characteristics of the substrate surface, such as its nature [16], roughness, surface charge [17] or its electrical response [18,19], determine not only the morphology of the films and even the success of the assembly process, but also the process kinetics.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of TiN nanoparticles EPD inducing steric stabilization in non-aqueous suspensions

Mendoza

González

Castro

et al. 2016

Journal of the European Ceramic Society

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Abstract:In this work, the process parameters involved in the electrophoretic deposition (EPD) to obtain thin TiN films was studied and optimised. The stability of commercial TiN nanopowder in isopropyl alcohol adding a cationic polymer (polyethylenimine) as dispersant, with different molecular weights, was investigated to determine the kinetics of the deposition and to reach the most efficient EPD process. Cathodic EPD was performed over electro-polished stainless steel substrates. It was found that the provided dispersion when the PEI with the highest molecular weight was added to the suspension, leads to the best deposition behaviour for short times. New flocculation phenomena were described which affect to the sticking factor, and thus to the evolution of the EPD kinetics. As a result of the designed stabilization system, a reliable and versatile EPD method to produce well consolidated nano-TiN coatings at 1200• C in vacuum atmosphere was described.

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Section: Epd Of Steric Stabilized Nano-tin Suspensionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of TiN nanoparticles EPD inducing steric stabilization in non-aqueous suspensions

Mendoza

González

Castro

et al. 2016

Journal of the European Ceramic Society

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“…Their relationship is shown in Eq. (1). Presence or absence of flammability affects the equipment of EPD and safety of operation.…”

Section: Results and Discussion 31 Zeta Potential And Electrophoretimentioning

confidence: 99%

“…An electric field is established between the two electrodes immersed in a particle suspension, causing the charged particles to migrate to and accumulate on the oppositely charged electrode. 1) EPD is especially appealing because of its low cost and ease of mass production.…”

Section: Introductionmentioning

confidence: 99%

Power efficiency of electrophoretic deposition of silica using nonflammable ethyl perfluorobutyl ether

Negishi

2014

J. Ceram. Soc. Japan

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Electrophoretic deposition (EPD) has attracted attention as a coating technology for ceramic particles. Ethyl perfluorobutyl ether (EFE), a hydrofluoroether, can be used as a solvent for preparing silica particle suspensions for EPD. EFE is polar, nonflammable, and has a high density. In addition, the electrical insulation of EFE allows significant power savings over conventional EPD. In this study, the power consumption of EPD with EFE was compared with that of EPD with various common solvents. The silica particle suspension showed a high zeta potential in EFE. Power consumption per unit deposition amount in EFE at 10 V was 6.4 © 10 ¹5 % of that of water at 100 V. Similarly, it was 2.6 © 10 ¹3 % of that of acetone, 7.8 © 10 ¹5 % of that of ethanol, and 7.5 © 10 ¹5 % of that of ethanol at 100 V. Compared with the solvents used previously in EPD, EFE offers significant energy savings to the EPD process.

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“…Recently Baldisserri (Baldisserri et al, 2010) proposed some assumptions to define the electrical behaviour of a potentiostatic EPD cell: a) the effect of capacitive transients on cell current is negligible, b) the faradic resistance of both the electrode/deposit interfaces is The assumption a) is based on the estimate of time required for double-layer charging. The assumption b) is supported by the consideration that after the formation of the first monolayer, the interface at the working electrode/suspension should be stabilised as the charging of double-layer should be completed.…”

Section: Ceramic Coatings -Applications In Engineering 48mentioning

confidence: 99%

Ceramic Coatings Obtained by Electrophoretic Deposition: Fundamentals, Models, Post-Deposition Processes and Applications

Riccardis¹

2012

Ceramic Coatings - Applications in Engineering

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An analysis of current transients during electrophoretic deposition (EPD) from colloidal TiO2 suspensions

Cited by 28 publications

References 19 publications

Improvement of TiN nanoparticles EPD inducing steric stabilization in non-aqueous suspensions

Improvement of TiN nanoparticles EPD inducing steric stabilization in non-aqueous suspensions

Power efficiency of electrophoretic deposition of silica using nonflammable ethyl perfluorobutyl ether

Ceramic Coatings Obtained by Electrophoretic Deposition: Fundamentals, Models, Post-Deposition Processes and Applications

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