Electrophoretic deposition of nanocomposite (HAp + TiO2) on titanium alloy for biomedical applications

Mohan, L.; Durgalakshmi, D.; Manivasagam, Geetha; Narayanan, T.S.N. Sankara; Asokamani, R.

doi:10.1016/j.ceramint.2011.12.056

Cited by 157 publications

(76 citation statements)

References 19 publications

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“…The specimens were polished with abrasive paper, grid 2000# as the last. Then specimens were rinsed with isopropanol and ultrasonically cleaned (Sonic-3, POLSONIC, Poland) in distilled water for 15 min, pickled in 25% HNO 3 for 10 min to remove oxide layers from the substrate [26] and finally thoroughly rinsed with distilled water prior to deposition.…”

Section: Preparation Of Specimenmentioning

confidence: 99%

The Properties of Nanosilver – Doped Nanohydroxyapatite Coating On the Ti13zr13Nb Alloy

Bartmański

2017

Advances in Materials Science

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The aim of this research was to study the properties of nanohydroxyapatite (nanoHAp) and nanohydroxyapatite, doped with nanosilver (nanoHAp/nanoAg), coatings obtained by an electrophoretic deposition process. The suspensions was prepared by dispersing 0.1 g of HAp nanopowder for nanoHAp coatings and 0.1 g of nanoHAp and 0.025 g nanoAg for nanoHAp/nanoAg coatings. The deposition was carried out for 1 min at 50 V voltage followed by drying at room temperature for 24 h and heating at 800°C for 1 h in vacuum. The thickness of the nanoHAp and nanoHAp/nanoAg coatings was found as of about 5 µm. The corrosion behavior tests made by potentiodynamic methods brought out slightly higher values of corrosion current for nanoHAp coatings and nanoHAp/nanoAg coatings as compared to the reference Ti13Zr13Nb specimen. The nanohardness of the nanoHAp coatings achieved 0.020 ± 0.004 GPa and of the nanoHAp/nanoAg coatings 0.026 ± 0.012 GPa. Nanoscratch test of the nanoHAp and nanoHAp/nanoAg coatings revealed an increased Critical Friction (mN) in the presence of nanosilver particles. The wettability angles decreased for nanoHAp/nanoAg coatings comparing to pure nanoHAp coatings on titanium alloy.

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Section: Preparation Of Specimenmentioning

confidence: 99%

The Properties of Nanosilver – Doped Nanohydroxyapatite Coating On the Ti13zr13Nb Alloy

Bartmański

2017

Advances in Materials Science

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“…Previous studies have demonstrated no change in crystallinity or chemistry using this procedure. 28,30 The mixture was again stirred for 2 hours before starting the coating and Ti-6Al-4V was used as the working electrode (-ve) and 316 stainless steel was used as a counter electrode (+ve). Voltage varying from 40 to 80 V was used for 2-5 minutes.…”

Section: Materials and Methods Materialsmentioning

confidence: 99%

“…25 The HA was then coated onto the alloy using EPD. 28,30 For this, the electrolyte was prepared by dissolving HA in isopropyl alcohol, stirring for 10 minutes then allowing the mixture to settle overnight. Previous studies have demonstrated no change in crystallinity or chemistry using this procedure.…”

Section: Materials and Methods Materialsmentioning

confidence: 99%

“…Further, EPD provides corrosion resistance to coatings, which has been reported to be 50-100 times higher than that provided by plasma spraying. 10,28 Bioactive HA coatings formed via EPD exhibit a lower dissolution rate than conventional spraying techniques because of the retention of crystalline phases instead of amorphous phases as in the case of plasma spraying. 10,29 Last, but not least, EPD is a costeffective technique that can implement nanostructures to improve implant performance.…”

Section: Introductionmentioning

confidence: 99%

“…25 EPD is carried out at lower temperatures and hence it eliminates the challenges faced due to high temperature processes during traditional glass-melting techniques, thus, exhibiting low thermal capability. 27 Several authors [28][29][30][31] have concluded that EPD employed for HA coatings exhibits strong interfacial bonding on Ti alloys and in vitro studies have also proved EPD to be a superior coating technique, as it provides higher bond strength than plasma-sprayed HA and chemically precipitated HA coatings. Further, EPD provides corrosion resistance to coatings, which has been reported to be 50-100 times higher than that provided by plasma spraying.…”

Section: Introductionmentioning

confidence: 99%

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Decreased Staphylococcus aureus and increased osteoblast density on nanostructured electrophoretic-deposited hydroxyapatite on titanium without the use of pharmaceuticals

Mathew¹,

Bhardwaj²,

Wang³

et al. 2014

IJN

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Background Plasma-spray deposition of hydroxyapatite on titanium (Ti) has proven to be a suboptimal solution to improve orthopedic-implant success rates, as demonstrated by the increasing number of orthopedic revision surgeries due to infection, implant loosening, and a myriad of other reasons. This could be in part due to the high heat involved during plasma-spray deposition, which significantly increases hydroxyapatite crystal growth into the nonbiologically inspired micron regime. There has been a push to create nanotopographies on implant surfaces to mimic the physiological nanostructure of native bone and, thus, improve osteoblast (bone-forming cell) functions and inhibit bacteria functions. Among the several techniques that have been adopted to develop nanocoatings, electrophoretic deposition (EPD) is an attractive, versatile, and effective material-processing technique. Objective The in vitro study reported here aimed to determine for the first time bacteria responses to hydroxyapatite coated on Ti via EPD. Results There were six and three times more osteoblasts on the electrophoretic-deposited hydroxyapatite on Ti compared with Ti (control) and plasma-spray-deposited hydroxyapatite on Ti after 5 days of culture, respectively. Impressively, there were 2.9 and 31.7 times less Staphylococcus aureus on electrophoretic-deposited hydroxyapatite on Ti compared with Ti (control) and plasma-spray-deposited hydroxyapatite on Ti after 18 hours of culture, respectively. Conclusion Compared with uncoated Ti and plasma-sprayed hydroxyapatite coated on Ti, the results provided significant promise for the use of EPD to improve bone-cell density and be used as an antibacterial coating without resorting to the use of antibiotics.

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Bioactive Micro‐arc Calcium Phosphate Coatings on Nanostructured and Ultrafine‐Grained Bioinert Metals and Alloys

Sharkeev

Комарова

Sedelnikova

et al. 2019

Bioceramics and Biocomposites

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Electrophoretic deposition of nanocomposite (HAp + TiO2) on titanium alloy for biomedical applications

Cited by 157 publications

References 19 publications

The Properties of Nanosilver – Doped Nanohydroxyapatite Coating On the Ti13zr13Nb Alloy

The Properties of Nanosilver – Doped Nanohydroxyapatite Coating On the Ti13zr13Nb Alloy

Decreased Staphylococcus aureus and increased osteoblast density on nanostructured electrophoretic-deposited hydroxyapatite on titanium without the use of pharmaceuticals

Bioactive Micro‐arc Calcium Phosphate Coatings on Nanostructured and Ultrafine‐Grained Bioinert Metals and Alloys

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