Amorphous Calcium Silicate Coating on Metallic Titanium

Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium silicate film was deposited on a titanium substrate by a spin-coating technique and subsequently heated at 500°C for 2 h in air. The deposited film, which was dense, had thickness of about 800 nm and strongly adhered to the substrate. Biomimetic apatite-forming ability of the deposited films was examined by soaking in simulated body fluid (SBF). Thin film X-ray diffractometry and scanning electron microscopy showed the formation of apatite on the surface after 10 days of soaking in SBF.

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Combined laser/sol–gel synthesis of calcium silicate coating on Ti–6Al–4V substrates for improved cell integration

Applied Surface Science ◽

10.1016/j.apsusc.2007.02.172 ◽

2007 ◽

Vol 253 (19) ◽

pp. 7998-8002 ◽

Cited By ~ 11

Author(s):

N. Mirhosseini ◽

P.L. Crouse ◽

L. Li ◽

D. Garrod

Keyword(s):

Calcium Silicate ◽

Sol Gel ◽

Silicate Coating ◽

Sol Gel Synthesis

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Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique

Coatings ◽

10.3390/coatings11020243 ◽

2021 ◽

Vol 11 (2) ◽

pp. 243

Author(s):

Diana Horkavcová ◽

Quentin Doubet ◽

Gisèle Laure Lecomte-Nana ◽

Eva Jablonská ◽

Aleš Helebrant

Keyword(s):

Simulated Body Fluid ◽

Body Fluid ◽

Sol Gel ◽

Titanium Substrate ◽

Dip Coating ◽

Coating Technique ◽

Metal Implants ◽

Excellent Adhesion ◽

Titania Sol ◽

Dip Coating Technique

The sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-gel coatings were doped with two forms of silver (AgNO3, Ag3PO4) and synthetic hydroxyapatite and applied on the titanium samples by dip-coating technique. After drying and slow firing, all coatings were characterized with scanning electron microscopy. Thin coatings were successfully prepared with excellent adhesion to the substrate (measured by ASTM D 3359-2), despite cracks. Coatings containing silver and hydroxyapatite demonstrated a 100% antibacterial effect against Escherichia coli after 24 h. The bioactivity of the coatings containing hydroxyapatite tested in modified simulated body fluid under static-dynamic conditions was confirmed by bone-like hydroxyapatite precipitation. To better understand the interaction of the coatings with simulated body fluid (SBF), changes of Ca2+ and (PO4)3− ions concentrations and pH values were studied.

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Surface Stoichiometry and Depth Profile of Tix-CuyNz Thin Films Deposited by Magnetron Sputtering

Materials ◽

10.3390/ma14123191 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3191

Author(s):

Arun Kumar Mukhopadhyay ◽

Avishek Roy ◽

Gourab Bhattacharjee ◽

Sadhan Chandra Das ◽

Abhijit Majumdar ◽

...

Keyword(s):

Magnetron Sputtering ◽

Photoelectron Spectroscopy ◽

Film Surface ◽

Grazing Incidence ◽

X Ray Diffraction ◽

X Ray ◽

Relative Composition ◽

Transmission Electron ◽

Deposited Film ◽

Deposited Films

We report the surface stoichiometry of Tix-CuyNz thin film as a function of film depth. Films are deposited by high power impulse (HiPIMS) and DC magnetron sputtering (DCMS). The composition of Ti, Cu, and N in the deposited film is investigated by X-ray photoelectron spectroscopy (XPS). At a larger depth, the relative composition of Cu and Ti in the film is increased compared to the surface. The amount of adventitious carbon which is present on the film surface strongly decreases with film depth. Deposited films also contain a significant amount of oxygen whose origin is not fully clear. Grazing incidence X-ray diffraction (GIXD) shows a Cu3N phase on the surface, while transmission electron microscopy (TEM) indicates a polycrystalline structure and the presence of a Ti3CuN phase.

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Sol-Gel Derived Titania/Hydroxyapatite Layer on Titanium Substrate

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.117-119.332 ◽

2011 ◽

Vol 117-119 ◽

pp. 332-334 ◽

Cited By ~ 1

Author(s):

Wen Yan Wang ◽

Yu Wu ◽

Jing Pei Xie ◽

Gao Lu ◽

Xiao Ming Dong ◽

...

Keyword(s):

Heat Treatment ◽

Surface Quality ◽

Phase Formation ◽

Volume Fraction ◽

Sol Gel ◽

Calcium Nitrate ◽

Titanium Substrate ◽

Gel Method ◽

Good Surface ◽

Coating Method

In this study, calcium nitrate(Ca(NO3)2•4H2O) and phosphorus pentoxide(P2O5) were used as precursor to prepare hydroxyapatite(HA) layer by sol-gel method, followed by a dipping-coating method to coat HA layer onto Ti. Phase formation and microstructure were investigated by XRD and SEM to study the influence of atmosphere on the property of HA layer. The results revealed that there exists no large cracks in the layer which was heated in the nitrogen, leading to a good surface quality compared with the layer which was heated in the air. And there is no obvious difference in crystallinity and volume fraction of HA in the layer when adopting heat treatment in different atmospheres.

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Electrophoretic Deposition of Titania Thin Films: Influence of Deposition Time on Microstructural and Optical Properties of the Coatings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.829.917 ◽

2013 ◽

Vol 829 ◽

pp. 917-921

Author(s):

Saber Ghannadi ◽

Hossein Abdizadeh ◽

Mohammad Reza Golobostanfard

Keyword(s):

Thin Films ◽

Optical Properties ◽

Electrophoretic Deposition ◽

Deposition Time ◽

Colloidal Suspension ◽

Vis Spectroscopy ◽

Titania Films ◽

Titania Sol ◽

Deposited Film ◽

Deposited Films

Titania thin films were prepared by electrophoretic deposition at various deposition times (1, 5 and 10 min) in constant applied potential (5 V). For this purpose, modified titania sol was prepared as a colloidal suspension. The influence of deposition time on the thickness and optical properties of titania films was investigated. Scanning electron microscope images illustrate compact and homogeneous titania films deposited on FTO substrates. The results show that the film thickness increases with increasing the deposition time. It could be inferred from UV-Vis spectroscopy that increasing the thickness of deposited film causes higher absorbance at UV region. Also, increasing the deposition time from 1 to 5 min leads to increase in optical band gap of the deposited films.

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Neutron diffraction study of antibacterial bioactive calcium silicate sol-gel glasses containing silver

International Journal of Applied Glass Science ◽

10.1111/ijag.12318 ◽

2017 ◽

Vol 8 (4) ◽

pp. 364-371 ◽

Cited By ~ 3

Author(s):

Daniela Carta ◽

Julian R. Jones ◽

Sen Lin ◽

Gowsihan Poologasundarampillai ◽

Robert J. Newport ◽

...

Keyword(s):

Neutron Diffraction ◽

Diffraction Study ◽

Calcium Silicate ◽

Sol Gel ◽

Neutron Diffraction Study ◽

Gel Glasses

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Characterization of Electrodeposited Cadmium Selenide Thin Films

Dhaka University Journal of Science ◽

10.3329/dujs.v60i1.10352 ◽

2012 ◽

Vol 60 (1) ◽

pp. 137-140 ◽

Cited By ~ 6

Author(s):

RI Chowdhury ◽

MS Islam ◽

F Sabeth ◽

G Mustafa ◽

SFU Farhad ◽

...

Keyword(s):

Thin Films ◽

Cadmium Selenide ◽

Low Cost ◽

X Ray Diffraction ◽

Glass Substrates ◽

Cdse Film ◽

Cell Structures ◽

Deposited Film ◽

Deposited Films

Cadmium selenide (CdSe) thin films have been deposited on glass/conducting glass substrates using low-cost electrodeposition method. X-ray diffraction (XRD) technique has been used to identify the phases present in the deposited films and observed that the deposited films are mainly consisting of CdSe phases. The photoelectrochemical (PEC) cell measurements indicate that the CdSe films are n-type in electrical conduction, and optical absorption measurements show that the bandgap for as-deposited film is estimated to be 2.1 eV. Upon heat treatment at 723 K for 30 min in air the band gap of CdSe film is decreased to 1.8 eV. The surface morphology of the deposited films has been characterized using scanning electron microscopy (SEM) and observed that very homogeneous and uniform CdSe film is grown onto FTO/glass substrate. The aim of this work is to use n-type CdSe window materials in CdTe based solar cell structures. The results will be presented in this paper in the light of observed data.DOI: http://dx.doi.org/10.3329/dujs.v60i1.10352 Dhaka Univ. J. Sci. 60(1): 137-140 2012 (January)

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