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Montenero, A.; Gnappi, G.; Ferrari, Francesca; Cesari, M.; Salvioli, E.; Mattogno, L.; Kačiulis, S.; Fini, Milena

doi:10.1023/a:1004738900778

Cited by 133 publications

(38 citation statements)

References 4 publications

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“…The biocompatibility is determined by the chemical processes occurring at the interface between prostheses and organic tissue which in the case of titanium, consists of a TiO 2 layer [4,5]. It is possible to increase the range of biomaterial applications by depositing a thicker layer of TiO 2 on the metal surface [6] or by covering it with another biocompatible material, e.g., hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 [7]. Titanium oxide surfaces show a wide range of structural and chemical properties, depending on their preparation and handling.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical formation and characterization of porous titania (TiO2) films on Ti

2008

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Galvanostatically and potentiostatically formed surface oxide films on titanium in H 2 O 2 free and H 2 O 2 containing H 2 SO 4 solutions were investigated. Conventional electrochemical techniques, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy, were used. In the absence of H 2 O 2 , the impedance response indicated a stable thin oxide film which depends on the mode of anodization of the metal. However, in the presence of H 2 O 2 the film characteristics were changed. A significant decrease in the corrosion resistance of the surface film was recorded. The film characteristics were also found to be affected by the mode of oxide film growth and polarization time. The EIS results and the impedance data fitting to equivalent circuit models have shown that the oxide film consists of two layers. The electrochemical characteristics of the anodic films formed under different conditions have been discussed.

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Section: Introductionmentioning

confidence: 99%

Electrochemical formation and characterization of porous titania (TiO2) films on Ti

2008

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“…A. Montenero, G. Gnappi, F. Ferrari et al 14) introduced TiO 2 buffer layer between HA and titanium substrate. In their work, HA layer was prepared by solgel method, and coating bond strength improved significantly.…”

Section: )mentioning

confidence: 99%

Influences of pH Value and Deposition Time on HA/TiO<sub>2</sub> Coatings Deposited by Electrochemical Method

Liu

et al. 2014

Mater. Trans.

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With titanium alloy after micro-arc oxidation as substrate, HA/TiO 2 coatings were prepared by electrochemical method. The coatings were characterized by means of SEM and XRD. Variation of pH value of electrode/electrolyte was measured by means of pH microprobe during treatment, and the influences of pH value and deposition time on HA/coatings by this method were investigated. The results show that micro-arc oxidation treatment are helpful to obtain a good adhesion between HA and substrate, and HA crystals are well-distributed on the TiO 2 film surface. The increasing of the pH value of treatment solutions results in higher crystallinity of HA crystals. During the process of deposition, pH value on the surface of the electrode increases at first and then decreases with deposition time, but pH value of electrolyte decreases with the deposition time. pH value has obvious influence on the morphology of HA crystals, and the size of HA crystal increases with the deposition time within certain limits. However, the size of HA crystal is abnormally large if the deposition time is too long.

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“…Many kinds of process have been used to prepare the bio-ceramic films, such as ion beam sputtering, 3) laser beam sputtering, 4) magnetic field sputtering, 5) sol-gel, 6) aerosol-gel, 7) electrophoretic deposition, 8) plasma spray deposition 9) and ion beam evaporation. 10) In these processes, the adherence between coatings and the substrate is the primal issue for practical applications, and therefore several techniques have been developed by modifying the surface, such as controlling surface roughness, 11) pre-oxidation of Ti surface forming TiO2 12) and CaTiO3 coating as a buffer layer. 13) Chemical vapor deposition (CVD) is advantageous to obtain wide-ranged coatings at relatively high deposition rate with good morphology controllability and well-adherence to substrates.…”

Section: Introductionmentioning

confidence: 99%

Apatite formation behavior on bio-ceramic films prepared by MOCVD

Sato

Goto

et al. 2009

J. Ceram. Soc. Japan

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Calcium titanate (CaTiO3), α-tricalcium phosphate (α-TCP) and hydroxyapatite (HAp) films were prepared by metal-organic chemical vapor deposition (MOCVD) using Ca(dpm)2, Ti(O-i-Pr)2(dpm)2 and (C6H5O)3PO precursors. The phases, composition and surface morphology of these films changed depending on substrate temperature (Tsub), total pressure (Ptot) and molar ratio of each precursors (RCa/Ti, RCa/P). The surface morphology of CaTiO3 films changed from granular structure to cauliflower-like texture, and its cross-sectional morphology changed from dense to columnar structure with increasing Tsub.

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Untitled

Cited by 133 publications

References 4 publications

Electrochemical formation and characterization of porous titania (TiO2) films on Ti

Electrochemical formation and characterization of porous titania (TiO2) films on Ti

Influences of pH Value and Deposition Time on HA/TiO<sub>2</sub> Coatings Deposited by Electrochemical Method

Apatite formation behavior on bio-ceramic films prepared by MOCVD

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