The influence of the deposition parameters on the properties of an rf-magnetron-deposited nanostructured calcium phosphate coating and a possible growth mechanism

Surmenev, Roman A.; Surmeneva, Maria A.; Evdokimov, K. E.; Пичугин, В. Ф.; Peitsch, Thorsten; Epple, Matthias

doi:10.1016/j.surfcoat.2010.12.039

Cited by 99 publications

(46 citation statements)

References 46 publications

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“…HA powder with the chemical formula (Ca 10 (PO 4 ) 6 (OH) 2 ) was prepared by mechanochemical activation and then used as a precursor-powder to prepare a target for sputtering. The powder was pressed before being sintered in air at 1100 • C for 1 h. The chemical composition of target material includes the molar Ca/P ratio of 1.67 ± 0.02, similar to the precursor HA powder [16,18]. Before coating deposition the vacuum chamber was evacuated to a base pressure of 10 -5 Pa. Then argon gas was admitted to provide a working pressure of 0.4 Pa The coating was prepared under RF power of 500 W, the distance between the target and substrate was kept constant at 40 mm.…”

Section: Methodsmentioning

confidence: 99%

Ultrathin film coating of hydroxyapatite (HA) on a magnesium–calcium alloy using RF magnetron sputtering for bioimplant applications

et al. 2015

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Section: Methodsmentioning

confidence: 99%

Ultrathin film coating of hydroxyapatite (HA) on a magnesium–calcium alloy using RF magnetron sputtering for bioimplant applications

et al. 2015

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“…A pure HA target was prepared according to the procedures previously described [10,11]. A commercially available apparatus with an RF (13.56 MHz, COMDEL) magnetron source was used to deposit the HA coatings.…”

Section: Coatings Fabrication and Characterizationmentioning

confidence: 99%

Nano-hydroxyapatite-coated metal-ceramic composite of iron-tricalcium phosphate: Improving the surface wettability, adhesion and proliferation of mesenchymal stem cells in vitro

Сурменева

Kleinhans

Vacun

et al. 2015

Colloids and Surfaces B: Biointerfaces

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“…HA has been used as a bioactive coating to improve the osteoconductivity of metallic implants. In addition to plasma spray deposition, a large number of coating techniques have been proposed for HA deposition on titanium implants, such as the sol-gel process [3], electrodeposition [4], pulsed laser deposition (PLD) [5], electron and ion beam deposition [6,7], electroncyclotron-resonance (ECR) [8], and radio-frequency magnetron sputtering (RFMS) [9].…”

Section: Introductionmentioning

confidence: 99%

Crystalline nano-coatings of fluorine-substituted hydroxyapatite produced by magnetron sputtering with high plasma confinement

López

Rossi

Archanjo

et al. 2015

Surface and Coatings Technology

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a b s t r a c tA radio-frequency magnetron sputtering technique operating in right-angle geometry (RAMS) with high plasma confinement was revised to produce thin films (15-570 nm) of fluorine-substituted hydroxyapatite, FHA, adapted to be used as nano-coatings for biomedical implants. An electron temperature of T eff ≈ 9.0 eV and a plasma electron density of 1.2 × 10 15 m −3 assured the nucleation of an amorphous fluorine-substituted hydroxyapatite phase on Si and Ti surfaces. With the aid of a Langmuir probe, the RAMS plasma energy was tuned to control the coating stoichiometry and the ratio between the crystalline and amorphous phases. The energy delivered over time from the bombardment of ions and electrons transformed the amorphous calcium phosphate phase into crystalline fluorine-substituted hydroxyapatite. The crystalline films were obtained at room temperature. The partial substitution of OH − for F − in the HA structure was confirmed by X-ray diffraction using synchrotron radiation in grazing-incidence mode, X-ray photoelectron spectroscopy and attenuated total reflection Fourier transform infrared spectroscopy. High-resolution transmission electron microscopy carried out on crosssection film samples prepared by a focused ion beam (FIB) technique revealed that the film ultrastructure was composed of columnar crystals oriented perpendicularly to the substrate surface. The crystals were connected to the substrate surface by ordered nanolayers, indicating the existence of a continuous binding between the two materials. This work demonstrates that the RAMS technique is able to produce FHA nano-coatings with controlled chemical compositions and structures on metallic implants for clinical applications.

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The influence of the deposition parameters on the properties of an rf-magnetron-deposited nanostructured calcium phosphate coating and a possible growth mechanism

Cited by 99 publications

References 46 publications

Ultrathin film coating of hydroxyapatite (HA) on a magnesium–calcium alloy using RF magnetron sputtering for bioimplant applications

Ultrathin film coating of hydroxyapatite (HA) on a magnesium–calcium alloy using RF magnetron sputtering for bioimplant applications

Nano-hydroxyapatite-coated metal-ceramic composite of iron-tricalcium phosphate: Improving the surface wettability, adhesion and proliferation of mesenchymal stem cells in vitro

Crystalline nano-coatings of fluorine-substituted hydroxyapatite produced by magnetron sputtering with high plasma confinement

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