Calcium Titanate Film-Coating on Titanium with Hydrothermal Treatments

2007 ◽  
Vol 330-332 ◽  
pp. 737-740 ◽  
Author(s):  
Masayuki Kon ◽  
Razia Sultana ◽  
Emi Fujihara ◽  
Kenzo Asaoka ◽  
Tetsuo Ichikawa
Keyword(s):  
High Pressure ◽  
Surface Modification ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Titanium Surface ◽  
Film Coating ◽  
Calcium Titanate ◽  
Maximal Pressure ◽  
Titanium Surfaces ◽  
Modification Of Titanium

Film-coating on the surface of titanium was investigated by hydrothermal treatments with a maximal pressure of 6.3 MPa (280°C) in CaO solution and water to improve bioactivity and biocompatibility. As a result, calcium titanate (CaTiO3) film was formed on the titanium surface. The surface-coated titanium was immersed in a simulated body fluid (SBF) to estimate its bioactivity. Apatite precipitation was observed on all hydrothermal-treated titanium surfaces after immersion in SBF for 4 weeks. In particular, the apatite precipitation of titanium treated with 6.3 MPa in CaO solution was clearer and larger in amount than those of all other hydrothermal-treated specimens. The results suggest that surface modification of titanium with high-pressure hydrothermal treatments can be expected to improve bioactivity and biocompatibility.

Surface Modification of Titanium with Hydrothermal Treatment

2007 ◽  
Vol 561-565 ◽  
pp. 1521-1524
Author(s):  
Akiko Obata ◽  
Toshihiro Kasuga
Keyword(s):  
Surface Modification ◽  
Hydrothermal Treatment ◽  
Titanium Surface ◽  
Deionized Water ◽  
Laser Raman Spectroscopy ◽  
Titanium Plate ◽  
Laser Raman ◽  
Naoh Solution ◽  
Titanium Surfaces ◽  
Modification Of Titanium

Hydrothermal treatment was performed on a titanium plate for its surface modification to enhance its bioactivity. The titanium plate was autoclaved in deionized water (DW) or 0.05 mol/l NaOH solution at 120, 200 and 240 °C for 24 hr. The titanium surfaces autoclaved in DW were homogeneously coated with nano-sized particles and polygonal deposits with the sizes of several hundreds nanometers. The deposits were regarded as anatase according to the results of laser Raman spectroscopy (LRS). In the case of autoclaving in 0.05 mol/l NaOH solution, leaf-like, needle-like and pyramid deposits were observed on titanium surfaces and regarded to consist of anatase or brookite by LRS analysis. The formation of the deposits significantly depended on the autoclaving temperature. The deposits adhered on the titanium surface though a tape-test; the adhesion of the particle was found to be excellent.

Nanodiamonds for improving lubrication of titanium surfaces in simulated body fluid

Carbon ◽  
2019 ◽  
Vol 143 ◽  
pp. 890-896 ◽  
Author(s):  
Asghar Shirani ◽  
Nicholas Nunn ◽  
Olga Shenderova ◽  
Eiji Osawa ◽  
Diana Berman
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Titanium Surfaces

Simple surface modification of poly(ε-caprolactone) for apatite deposition from simulated body fluid

Biomaterials ◽  
2005 ◽  
Vol 26 (15) ◽  
pp. 2407-2413 ◽  
Author(s):  
Ayako Oyane ◽  
Masaki Uchida ◽  
Cleo Choong ◽  
James Triffitt ◽  
John Jones ◽  
...  
Keyword(s):  
Surface Modification ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Apatite Deposition ◽  
Simple Surface

scholarly journals Synthesis and characterization of sintered hydroxyapatite/lignin coatings on titanium

2012 ◽  
Vol 66 (2) ◽  
pp. 187-192
Author(s):  
Rade Surudzic ◽  
Sanja Erakovic ◽  
Vesna Miskovic-Stankovic
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Open Circuit Potential ◽  
Electrochemical Impedance ◽  
Open Circuit ◽  
Constant Voltage ◽  
Corrosion Stability ◽  
Similar Chemical ◽  
Titanium Surfaces

In order to improve corrosion stability and biocompatibility of titanium surfaces, hydroxyapatite (Ca10(PO4)6(OH)2, HAP) has been used as coating material due to the fact that it possess similar chemical composition as bone tissue. Lignin?s (Lig) usage in medical applications could be interesting because it could lead to thermal stability, hydrophilicity, biocompatibility and biodegradability of different materials. Bioceramic hydroxyapatite/lignin (HAP/Lig) coatings on titanium were obtained from ethanol suspension by electrophoretic deposition method. The uniform and compact HAP/Lig coatings were deposited at constant voltage of 60 V for 45 s and sintered at 900?C in argon atmosphere. The corrosion stability of sintered HAP/Lig coatings in simulated body fluid (SBF) at 37?C was investigated by open circuit potential-time measurements and electrochemical impedance spectroscopy (EIS). The greater values of open circuit potential, as well as EIS results, indicated improved corrosion resistance and good corrosion stability of HAP/Lig coatings in simulated body fluid at 37?C .

Effects of Surface Modification of Titania on In Vitro Apatite-Forming Ability

2014 ◽  
Vol 604 ◽  
pp. 196-199 ◽  
Author(s):  
Inga Narkevica ◽  
Jurijs Ozolins ◽  
Liga Berzina-Cimdina
Keyword(s):  
Surface Modification ◽  
Thermal Treatment ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Uv Light ◽  
Biological Response ◽  
Surface Activation ◽  
Living Body ◽  
Artificial Materials

Surface properties of a material play a significant role in manipulating biological response of living body to artificial materials. The aim of this work was put on bioactivity assessment of TiO2 ceramic after thermal treatment and further surface activation with UV-light. The in vitro apatite-forming ability was examined by soaking the samples into the simulated body fluid for several days. The research shows that nanostructural surface and UV irradiation accelerates formation of apatite on TiO2 pellets.

Corrosion Protection of Nano-biphasic Calcium Phosphate Coating on Titanium Substrate

2020 ◽  
Vol 16 (5) ◽  
pp. 779-792
Author(s):  
Ahlam M. Fathi ◽  
Howida S. Mandour ◽  
Hanaa K. Abd El-Hamid
Keyword(s):  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Biphasic Calcium Phosphate ◽  
Titanium Surface ◽  
Electrochemical Impedance ◽  
Calcium Phosphates ◽  
Diffusion Method ◽  
Calcium Phosphate Coating ◽  
Chemical Compositions

Background: Increasing the bioactivity of metallic implants is necessary for biomaterial applications where hydroxyapatite (HA) is used as a surface coating. In industry, HA is currently coated by plasma spraying, but this technique has a high cost and produces coating with short-term stability. Objectives: In the present study, electrophoretic deposition (EPD) was used to deposit nano-biphasic calcium phosphate compound (β-tri-calcium phosphate (β-TCP) /hydroxyapatite (HA)) bio-ceramics on the titanium surface. The microstructural, chemical compositions and bioactivity of the β- TCP/HA coatings were studied in a simulated body fluid solution (SBF). Methods: Scanning electron microscopy (SEM) equipped with energy-dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR) were used. Additionally, the antibacterial effect was studied by the agar diffusion method. The corrosion behavior of the β-TCP/HA coating on titanium surface (Ti) in the SBF solution at 37oC was investigated by means of electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests. Results: The Ti surface modification increased its biocompatibility and corrosion resistance in the simulated body fluid. The antibacterial inhibition activity of the β-TCP/HA bio-ceramic was enhanced by electroless silver deposition. The enhanced properties could be attributed to the use of nano-sized biphasic calcium phosphates in a low-temperature EPD process. Conclusions: The β-TCP/HA and β-TCP/HA/Ag coatings well protect Ti from the corrosion in SBF and endow Ti with biocompatibility. The β-4-TCP/HA/Ag/Ti substrate shows good antibacterial activity.

Sign in / Sign up

Export Citation Format

Share Document