Electrophoretic deposition kinetics and properties of ZrO 2 nano coatings

Saberi, Fahimeh; Boroujeny, Behrooz Shayegh; Doostmohamdi, Ali; Baboukani, Amin Rabiei; Asadikiya, Mohammad

doi:10.1016/j.matchemphys.2018.04.050

Cited by 26 publications

(10 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1) [19], was utilized to measure the form factor on each optical micrograph. The shape factor (F) is the standard for estimating the sphericality of grains; the closer it is to 1, the higher the grain sphericity will be [20].…”

Section: Methodsmentioning

confidence: 99%

Effects of strain-induced melt activation treatment on the microstructure and properties of Zn sacrificial anodes

Boroujeny

Goojani

Akbari

2021

Int J Miner Metall Mater

Self Cite

View full text Add to dashboard Cite

The microstructural properties and electrochemical performance of zinc (Zn) sacrificial anodes during strain-induced melt activation (SIMA) were investigated in this study. The samples were subjected to a compressive ratio of 20%-50% at various temperatures (425-435°C) and durations (5-30 min). Short-term electrochemical tests (anode tests) based on DNV-RP-B401 and potentiodynamic polarization tests were performed in 3.5wt% NaCl solution to evaluate the electrochemical efficiency and corrosion behavior of the samples, respectively. The electrochemical test results for the optimum sample confirmed that the corrosion current density declined by 90% and the anode efficiency slightly decreased relative to that of the raw sample. Energy-dispersive X-ray spectroscopy, scanning electron microscopy, metallographic images, and microhardness profiles showed the accumulation of alloying elements on the boundary and the conversion of uniform corrosion into localized corrosion, hence the decrease of the Zn sacrificial anode's efficiency after the SIMA process.

show abstract

Section: Methodsmentioning

confidence: 99%

Effects of strain-induced melt activation treatment on the microstructure and properties of Zn sacrificial anodes

Boroujeny

Goojani

Akbari

2021

Int J Miner Metall Mater

Self Cite

View full text Add to dashboard Cite

show abstract

“…The parameter time was also varied from 10 to 30 minutes for the deposition. [12][13][14][15] A stainless steel sheet with a working area of 100 × 50 mm 2 was used as the anode. Alumina crucible samples were used as a working electrode (cathode).…”

Section: Methodsmentioning

confidence: 99%

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Mideen¹,

Venkatasubramanian²,

Sridhar³

et al. 2020

RJC

View full text Add to dashboard Cite

Electrophoretic deposition of zirconia on alumina crucibles was carried out at constant voltage conditions from zirconia suspension prepared with isopropyl alcohol. The phase purity and surface morphology of coated samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy coupled with energy dispersive X-ray analysis. The maximum deposit yield was obtained with a direct current potential of 125 V. The substrates pretreated with acid-base and subjected for sintering temperature 1100°C for one hour showed excellent adhesion on both sides. The X-ray diffraction results showed the monoclinic phase is the major component and the average crystallite sizes of coated deposits were found as ~4.1μ. The absorption bands observed at 463 cm -1 , 743 cm -1 and at 486 cm -1 confirm the presence of ZrO 2 phases. The intensity of bands observed at 3415 cm -1 and 1634 cm -1 were gradually decreased due to sintering confirm the stretching and deformation of the O-H bond. The surface analysis showed that the zirconia particles are of uniform size and there is a considerable agglomeration of the particles on alumina substrates. The energy dispersive analysis indicated the presence of elemental Zr and O and sintering causes the penetration of agglomerated zirconia particles into the micropores present on alumina substrates and is responsible for excellent adhesion.

show abstract

“…Organic liquids and alcohols offer many advantages such as their good chemical stability, which avoid adverse reactions to the electrode, disrupting the formation of the coating 16 . Among the conventional solvents used in EPD, isopropanol is a good candidate due to its low dielectric constant (19.4), low viscosity (2.04 mPa s), and a moderate evaporation rate (saturated vapour pressure equal to 4.4 kPa) 19‐21 . The kinetics of EPD has also been widely investigated 16,22‐24 .…”

Section: Introductionmentioning

confidence: 99%

“…16 Among the conventional solvents used in EPD, isopropanol is a good candidate due to its low dielectric constant (19.4), low viscosity (2.04 mPa s), and a moderate evaporation rate (saturated vapour pressure equal to 4.4 kPa). [19][20][21] The kinetics of EPD has also been widely investigated. 16,[22][23][24] In particular, controlling the kinetics during EPD makes possible the control of the desired mass/ thickness of deposit.…”

Section: Introductionmentioning

confidence: 99%

Advances in the control of electrophoretic process parameters to tune the ytterbium disilicate coatings microstructure

et al. 2020

View full text Add to dashboard Cite

Suspensions of ytterbium disilicate in isopropanol were prepared using iodine dispersant. Their zeta potential, electrical conductivity, and pH dependence with iodine concentration is detailed. Electrophoretic deposition was performed on silicon substrates at various voltages (100-200 V) and times (until 10 minutes) and the growth dynamic was investigated. It was observed that the deposited mass reaches a maximum value for [I 2 ] = 0.2 g/L, and the coating microstructure becomes porous at higher iodine concentrations. Current density and voltage measurements allowed to correlate this behavior to the increase of free protons concentration in the suspension. In these conditions, it was proved that porosity increases with the increase in applied voltage, and a compaction occurs as the deposition time increases. This has been related to the coating resistance increase and subsequent decrease in effective voltage in the suspension. The denser coatings (20% of porosity) were obtained in the case of suspension without iodine, at the minimum applied voltage and for the longest deposition times.

show abstract

Electrophoretic deposition kinetics and properties of ZrO 2 nano coatings

Cited by 26 publications

References 41 publications

Effects of strain-induced melt activation treatment on the microstructure and properties of Zn sacrificial anodes

Effects of strain-induced melt activation treatment on the microstructure and properties of Zn sacrificial anodes

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Advances in the control of electrophoretic process parameters to tune the ytterbium disilicate coatings microstructure

Contact Info

Product

Resources

About