A comparative study on the direct and pulsed current electrodeposition of hydroxyapatite coatings on surgical grade stainless steel

Gopi, D.; Indira, J.; Kavitha, L.

doi:10.1016/j.surfcoat.2011.12.011

Cited by 113 publications

(90 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The diffraction peaks are observed at 2θ values for HA at 25.8°, 32.2° and 40.5°, for calcium pyrophosphate at 26.7°, 38.5, 47.05° and brushite 29.2° and 35.4°. Similar results were observed in other research by Gopi et al and Sameri et al [15,16]. Figure 4(a-d) represents the FTIR spectra of the calcium phosphates coating.…”

Section: Resultssupporting

confidence: 89%

“…When the current density increased to 20mAcm -2 , the thickness was 31.39μm (Figure 2(c2)), in the same way, the sample at pulsed time of 8s with 10mAcm -2 presented a thickness of 13.465μm (Figure 2(b2)) and for 20mAcm -2 it was 14.83μm ( Figure 2(d2)). Hence, the coating obtained by the pulsed electrodeposition method with increases in the current density produces a thicker coating than the one that can be obtained from a low current density and it's further supported by the results from Chakraborty et al and Gopi, et al [14,15]. The mapping was carried out to evaluate the distribution of calcium and phosphorus on Ti6Al4V.…”

Section: Methodsmentioning

confidence: 62%

See 1 more Smart Citation

The effect of pulsed current electrodeposition parameters of calcium phosphates coating on Ti6Al4V ELI

Sierra-Herrera

Sandoval-Amador

Supelano

et al. 2017

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract.Pulse current electrodeposition is a technique of special interest, due to the advantages it has, like easy operation, high control in the amount, homogeneity and purity of the deposited material, and low cost. This work studies the influence of the pulsed electrodeposition parameters variation on the characteristics of calcium phosphates coatings, including the composition, crystallinity and morphology. The influence of the current density and pulse on and off time on the physicochemical properties of the obtained coatings were evaluated. The coatings were electrodeposited on Ti6Al4V using Ca(NO3)2·H2O and NH4H2PO4 with a Ca/P molar ratio of 1.67. The coatings were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM). The analysis of DRX confirmed the formation of HAP. The results revealed that the variation of the current density modified the morphology of the coating. Also, the amount of material deposited increases as the off-time pulse increases, allowing the diffusion of the ions in the solution towards the working electrode.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Methodsmentioning

confidence: 62%

The effect of pulsed current electrodeposition parameters of calcium phosphates coating on Ti6Al4V ELI

Sierra-Herrera

Sandoval-Amador

Supelano

et al. 2017

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…The occurrence of CO 3 2-can be attributed to the reaction of CO 2 with OH -ions in air; hence, CO 3 2 À ion content is negligible [40]. These results agree well with other reported data in literature [41,42].…”

Section: Ha1supporting

confidence: 92%

Effect of Na+ and NaOH concentrations on the surface morphology and dissolution behavior of hydroxyapatite

Mao

Yang

Zhu

et al. 2015

Ceramics International

View full text Add to dashboard Cite

“…[17][18][19] Pulsed electrodeposition enables the formation of more uniform films than is possible using continuous electrodeposition because the pulse-off time (t off ) allows the diffusion of ions from the solution to the surface of the working electrode, thus lowering the concentration gradient during the next pulse-on time (t on ). Furthermore, pulsed electrodeposition can make more refined structure than is possible when using continuous deposition.…”

Section: -14)mentioning

confidence: 99%

“…In addition, various thin film nanostructures can be formed by con-S Communication trolling the sign and the amplitude of the pulsed voltages in pulsed electrodeposition. [17][18][19] In this study, using pulsed electrodeposition, we fabricated nanostructured α-Fe 2 O 3 thin films with elemental doping. The thickness and the morphology of the α-Fe 2 O 3 thin films can be tailored simply by controlling the electrodeposition conditions such as the potential, time, and annealing condition.…”

Section: -14)mentioning

confidence: 99%

Full Parametric Impedance Analysis of Photoelectrochemical Cells: Case of a TiO2 Photoanode

Nguyen¹,

Tran²,

Nguyen³

et al. 2018

J. Korean Ceram. Soc

View full text Add to dashboard Cite

Ferric oxide (α-Fe 2 O 3 , hematite) is an n-type semiconductor; due to its narrow band gap (E g = 2.1 eV), it is a highly attractive and desirable material for use in solar hydrogenation by water oxidation. However, the actual conversion efficiency achieved with Fe 2 O 3 is considerably lower than the theoretical values because the considerably short diffusion length (2-4 nm) of holes in Fe 2 O 3 induces excessive charge recombination and low absorption. This is a significant hurdle that must be overcome in order to obtain high solar-to-hydrogen conversion efficiency. In consideration of this, it is thought that elemental doping, which may make it possible to enhance the charge transfer at the interface, will have a marked effect in terms of improving the photoactivities of α-Fe 2 O 3 photoanodes. Herein, we report on the synthesis by pulsed electrodeposition of α-Fe 2 O 3 -based anodes; we also report on the resulting photoelectrochemical (PEC) properties. We attempted Ti-doping to enhance the PEC properties of α-Fe 2 O 3 anodes. It is revealed that the photocurrent density of a bare α-Fe 2 O 3 anode can be dramatically changed by controlling the condition of the electrodeposition and the concentration of TiCl 3 . Under optimum conditions, a modified α-Fe 2 O 3 anode exhibits a maximum photocurrent density of 0.4 mA/cm 2 at 1.23 V vs. reversible hydrogen electrode (RHE) under 1.5 G simulated sunlight illumination;this photocurrent density value is about 3 times greater than that of unmodified α-Fe 2 O 3 anodes.

show abstract

A comparative study on the direct and pulsed current electrodeposition of hydroxyapatite coatings on surgical grade stainless steel

Cited by 113 publications

References 44 publications

The effect of pulsed current electrodeposition parameters of calcium phosphates coating on Ti6Al4V ELI

The effect of pulsed current electrodeposition parameters of calcium phosphates coating on Ti6Al4V ELI

Effect of Na+ and NaOH concentrations on the surface morphology and dissolution behavior of hydroxyapatite

Full Parametric Impedance Analysis of Photoelectrochemical Cells: Case of a TiO2 Photoanode

Contact Info

Product

Resources

About