Effect of annealing temperature on the structural and mechanical properties of coatings prepared by electrophoretic deposition of TiO2 nanoparticles

Dhiflaoui, Hafedh; Jaber, Nader Ben; Lazar, Florica; Fauré, J.; Larbi, Ahmed; Benhayoune, Hicham

doi:10.1016/j.tsf.2017.07.056

Cited by 25 publications

(20 citation statements)

References 51 publications

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“…Figure 6. Sketch of the electrophoretic deposition process [60]. Sol-gel coating is one of the most successful coating processes of biomedical devices.…”

mentioning

confidence: 99%

On Coating Techniques for Surface Protection: A Review

Fotovvati

Namdari

Dehghanghadikolaei

2019

JMMP

288

185

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A wide variety of coating methods and materials are available for different coating applications with a common purpose of protecting a part or structure exposed to mechanical or chemical damage. A benefit of this protective function is to decrease manufacturing cost since fabrication of new parts is not needed. Available coating materials include hard and stiff metallic alloys, ceramics, bio-glasses, polymers, and engineered plastic materials, giving designers a variety freedom of choices for durable protection. To date, numerous processes such as physical/chemical vapor deposition, micro-arc oxidation, sol–gel, thermal spraying, and electrodeposition processes have been introduced and investigated. Although each of these processes provides advantages, there are always drawbacks limiting their application. However, there are many solutions to overcome deficiencies of coating techniques by using the benefits of each process in a multi-method coating. In this article, these coating methods are categorized, and compared. By developing more advanced coating techniques and materials it is possible to enhance the qualities of protection in the future.

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“…Figure 6. Sketch of the electrophoretic deposition process [60]. Sol-gel coating is one of the most successful coating processes of biomedical devices.…”

mentioning

confidence: 99%

On Coating Techniques for Surface Protection: A Review

Fotovvati

Namdari

Dehghanghadikolaei

2019

JMMP

288

185

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“…The decrease in mass loss for SH-PEG-DPA functionalized substrates when compared to non-functionalized substrates under the high particle concentration and high field condition nominally supports the previously discussed qualitative observations of increased film stability in the cleaved, functionalized substrates (Figure 5B). However, with an appreciable amount of mass loss still present with the functionalized substrates under this set of conditions, an additional processing step to further increase adhesion may be necessary, such as flash sintering or another heat treatment (Dhiflaoui et al, 2017;Kwon et al, 2018). Varying the molecular weight of the PEG spacer on the chelating agent molecule, as mentioned above, could also be investigated to further improve film stability and decrease mass loss when tested with the Tape Test.…”

Section: Effect Of Surface Functionalization On Epd Filmsmentioning

confidence: 99%

“…However, the use of dispersing agents can introduce additional considerations of chemical compatibility between the additive and solvent and nonideal behavior in solution, while particular deposition parameters can introduce unfavorable particle-substrate interactions and non-ideal particle behavior in solution. Ultimately, these approaches can limit the maximum achievable yield (Yum et al, 2003;Besra and Liu, 2007;Khalili et al, 2016;Liu et al, 2016;Dhiflaoui et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

et al. 2021

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Incorporating nanoparticles into devices for a wide range of applications often requires the formation of thick films, which is particularly necessary for improving magnetic power storage, microwave properties, and sensor performance. One approach to assembling nanoparticles into films is the use of electrophoretic deposition (EPD). This work seeks to develop methods to increase film thickness and stability in EPD by increasing film-substrate interactions via functionalizing conductive substrates with various chelating agents. Here, we deposited iron oxide nanoparticles onto conductive substrates functionalized with three chelating agents with different functional moieties and differing chelating strengths. We show that increasing chelating strength can increase film-substrate interactions, resulting in thicker films when compared to traditional EPD. Results will also be presented on how the chelating strength relates to film formation as a function of deposition conditions. Yield for EPD is influenced by deposition conditions including applied electric field, particle concentration, and deposition time. This work shows that the functionalization of substrates with chelating agents that coordinate strongly with nanoparticles (phosphonic acid and dopamine) overcome parameters that traditionally hinder the deposition of thicker and more stable films, such as applied electric field and high particle concentration. We show that functionalizing substrates with chelating agents is a promising method to fabricate thick, stable films of nanoparticles deposited via EPD over a larger processing space by increasing film-substrate interactions.

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“…TiO 2 coatings, produced by several techniques, such as sol-gel, 4 vapor phase deposition 5 and electrophoretic deposition, 6 are widely employed in a variety of industrial application as their morphology and structure can be changed according to the experimental conditions. 7…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, a heat treatment is necessary in order to enhance the coatings the mechanical properties and adhesion. 7–35…”

Section: Introductionmentioning

confidence: 99%

The tribological and corrosion behavior of TiO₂ coatings deposited by the electrophoretic deposition process

Dhiflaoui

Khlifi

Barhoumi

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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TiO2 coatings have recently been used as corrosion resistant materials to protect metals in several environments. In this study, the microstructure, phase composition and morphology under different voltages (20, 30 and 40 V) were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD) and atomic force microscopy (AFM), respectively. The coating corrosion performance was examined by potentiodynamic polarization in 3.5 wt% NaCl solution. Experimental findings indicate that the thickness and cracks of the coating rise by increasing voltage. Energy dispersive X-ray spectroscopy results show that the atomic ratio Ti/O of the coating has an almost constant ratio. Obviously, the defects and cracks on the deposited coatings resulted in corrosive attack due to a considerable increase of the corrosion current density noticed during potentiodynamic polarization experiments. The film produced under 30 V exhibited the lowest corrosion current density [Formula: see text] value of 0.21 µA cm−2 as well as the lowest corrosion potential ([Formula: see text] value of −111.89 mV, which was attributed mainly to the significant decrease of micro-pore density in the coating.

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Effect of annealing temperature on the structural and mechanical properties of coatings prepared by electrophoretic deposition of TiO2 nanoparticles

Cited by 25 publications

References 51 publications

On Coating Techniques for Surface Protection: A Review

On Coating Techniques for Surface Protection: A Review

Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

The tribological and corrosion behavior of TiO₂ coatings deposited by the electrophoretic deposition process

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Effect of annealing temperature on the structural and mechanical properties of coatings prepared by electrophoretic deposition of TiO2 nanoparticles

Cited by 25 publications

References 51 publications

On Coating Techniques for Surface Protection: A Review

On Coating Techniques for Surface Protection: A Review

Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

The tribological and corrosion behavior of TiO2 coatings deposited by the electrophoretic deposition process

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The tribological and corrosion behavior of TiO₂ coatings deposited by the electrophoretic deposition process