Study of HVOF-sprayed hydroxyapatite/titania graded coatings under in-vitro conditions

Henao, John; Sotelo-Mazón, O.; Giraldo-Betancur, Astrid L.; Hincapie-Bedoya, J.; Espinosa-Arbeláez, D.G.; Poblano-Salas, C. A.; Cuevas-Arteaga, C.; Corona‐Castuera, Jorge; Martínez-Gómez, L.

doi:10.1016/j.jmrt.2020.10.005

Cited by 17 publications

(7 citation statements)

References 58 publications

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“…291 It is a ceramic material that is widely employed with HA to enhance its properties. Titania addition has a significant influence on adhesive strength, 254 cohesive strength, 291 bond strength, 396 shear strength, 254 fracture toughness, 254 Young's modulus, 397 interfacial toughness, 398 thus influencing the HA decomposition, 399 corrosion, 400,401 and cytocompatibility. 289,[402][403][404] TiO 2 /HA composite coatings were successfully deposited through plasma spray 154,170,210,401,405,406 and HVOF.…”

Section: Biomaterials Science Reviewmentioning

confidence: 99%

“…289,[402][403][404] TiO 2 /HA composite coatings were successfully deposited through plasma spray 154,170,210,401,405,406 and HVOF. 289,398,400,402,407 Dimitrievska et al investigated the ontogenesis studies over TiO 2 /HA nano-composite coatings produced through plasma spray and HVOF spay on the Ti-6Al-4V substrate. TiO 2 caused a three-fold enhancement of hydrophilicity in composite coatings as compared to the pure HA coating.…”

Section: Biomaterials Science Reviewmentioning

confidence: 99%

“…289,402–404 TiO 2 /HA composite coatings were successfully deposited through plasma spray 154,170,210,401,405,406 and HVOF. 289,398,400,402,407…”

Section: Selective Reinforcements In Hydroxyapatite Composite Coatingsmentioning

confidence: 99%

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Bioactive surface modifications through thermally sprayed hydroxyapatite composite coatings: a review of selective reinforcements

et al. 2022

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Section: Biomaterials Science Reviewmentioning

confidence: 99%

Section: Biomaterials Science Reviewmentioning

confidence: 99%

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Bioactive surface modifications through thermally sprayed hydroxyapatite composite coatings: a review of selective reinforcements

et al. 2022

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“…Erwin Mayrhofer [10] In previous decades, composite coating had been widely investigated owing to its excellent combination properties. Henao [11] pointed out that in vitro bioactivity and electrochemical interactions of HVOF-Sprayed HAp/TiO 2 graded coatings had biocompatibility, adhesion strength and corrosion resistance. Bobzin [12] studied the thermal shock behavior of different multilayer thermal barrier coatings (TBCs) made from La 2 Zr 2 O 7 (LZ), ZrO 2 -7 wt% Y 2 O 3 (YSZ) and a freestanding LZ-YSZ coating by plasma spraying.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of HVOF Cr3C2–NiCr Coating with Different Bonding Layer on the Interactive Behavior of Fatigue and Corrosion

Zhang

Yun

et al. 2022

Coatings

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In order to improve material service life under a fatigue and corrosion coupling environment, a high-velocity oxygen fuel (HVOF) Cr3C2-NiCr coating with a bonding layer was prepared. The objective was to obtain the optimum bonding layer for the HVOF Cr3C2-NiCr coating, which included a laser cladding (LC) Ni625 layer, extreme high-speed laser material deposition (EHLA) Ni625 layer and HVOF NiCr layer. Fatigue properties of the samples with various bonding layers were investigated by means of a four-point bending fatigue test. Electrochemical impedance spectroscopy (EIS) and the salt spray test were executed after the bending fatigue test to simulate the interactive effect of fatigue and corrosion atmosphere. Failure surfaces were characterized by scanning electron microscopy (SEM) and an energy-dispersive spectrometer (EDS) to indicate the details of corrosion products. Corrosive behaviors of samples were adequately demonstrated according to the results, which included the curves of potentiostatic polarization, impedance magnitude and phase degree, and corrosion products. The result showed that the cycles of perforative cracking for the sample with the EHLA Ni625 bonding layer was almost three times than that of the sample with the HVOF NiCr layer. The magnitude of EIS reduced from ~105 to ~103 for the sample after BFT. Eventually, the main improvement mechanism of the HVOF Cr3C2-NiCr coating with the EHLA Ni625 bonding layer was attributed to the grain refinement of the bonding layer and performed a good level of metallurgical bonding with the substrate.

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“…Titanium and its alloys are promising dental implant materials 1–7 due to their good mechanical properties, corrosion resistance, and good biocompatibility 8–28 . However, the causes of implantation failure are that their biological inertia results in the difficulty to directly join with the human bond tissue 29 and a poor ability to facilitate new tissue formation at the early stage of implantation.…”

Section: Introductionmentioning

confidence: 99%

Effect of fluoride and hydroxyl group on bioactivity of the anodized films prepared by two‐step anodization at low current density

Saenrang

Kashima

2022

Surface & Interface Analysis

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Titanium and its alloys are promising dental implant materials. In order to improve the bioactivity of the anodized films, the two‐step anodization was performed to produce the films. The steps were performed at 0.2 mA/cm2 for 30 min in electrolytes containing H3PO4/C2H5OH and H3PO4/C2H5OH/NH4F, respectively. The anodized films were soaked in a simulated body fluid (SBF). The effects of surface roughness, hydroxyl groups, fluoride, and hydrophilicity groups on the bioactivity were investigated and were found on the anodized films formed under two‐step anodization using 1 M H3PO4 + 80% V/V C2H5OH + 0.75 wt% NH4F. The bioactivity evaluation showed that the combination of two‐step anodization in NH4F as an electrolyte induced a formation of apatite on the anodized films. The surface roughness, hydroxyl groups, and fluoride formed on the hydrophilic anodized films are found to be responsible for the rapid formation of hydroxyapatite during SBF soaking. This will be useful in various biomedical applications especially in dental implant procedures.

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Study of HVOF-sprayed hydroxyapatite/titania graded coatings under in-vitro conditions

Cited by 17 publications

References 58 publications

Bioactive surface modifications through thermally sprayed hydroxyapatite composite coatings: a review of selective reinforcements

Bioactive surface modifications through thermally sprayed hydroxyapatite composite coatings: a review of selective reinforcements

Comparative Study of HVOF Cr3C2–NiCr Coating with Different Bonding Layer on the Interactive Behavior of Fatigue and Corrosion

Effect of fluoride and hydroxyl group on bioactivity of the anodized films prepared by two‐step anodization at low current density

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