Fabrication and characterization of nano-HA-45S5 bioglass composite coatings on calcium-phosphate containing micro-arc oxidized CP-Ti substrates

被引：28
作者：
Farnoush, Hamidreza [1 ]
Muhaffel, Faiz [2 ]
Cimenoglu, Huseyin [2 ]
机构：
[1] Univ Kashan, Fac Engn, Dept Met & Mat Engn, Kashan, Iran
[2] Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Istanbul, Turkey
来源：
APPLIED SURFACE SCIENCE | 2015年 / 324卷
关键词：
Micro-arc oxidation; Electrophoretic deposition; Bioglass; Hydroxyapatite; Bonding strength; Corrosion behavior; ELECTROPHORETIC DEPOSITION; HYDROXYAPATITE COATINGS; INNOVATIVE FABRICATION; CORROSION BEHAVIOR; OXIDATION; TITANIUM; BIOACTIVITY; MAGNESIUM; FILMS; NANOCOMPOSITES;
D O I：
10.1016/j.apsusc.2014.11.032
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the present study, micro-arc oxidation (MAO) was carried out on commercially pure titanium (CP-Ti) to fabricate porous titanium oxide coatings containing calcium phosphates (Cap) at different applied voltages of 300, 330 and 360 V for 5 min. Subsequently, nano-hydroxyapatite (HA) and HA-4555 bioglass (BG) composite were effectively coated on micro-arc oxidized substrate by electrophoretic deposition (EPD) at a constant voltage of 30 V for 120 s. The phase, structural agents, microstructure and composition of MAO interlayer and subsequent EPD coatings were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. Thermal stability of the as-deposited coatings was analyzed by simultaneous differential scanning calorimetry and thermal gravimetery. The pull-off adhesion tests showed the highest bonding strength was obtained for HA-BG coating on micro-oxidized sample at 360 V. The results of potentiodynamic polarization and impedance spectroscopic measurements in simulated body fluid solution depicted that the combination of MAO treatment at 360 V and EPD of HA-BG composite could effectively increase the corrosion resistance of CP-Ti substrates. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：765 / 774
页数：10
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