Oxidation behavior of γ-TiAl based alloy with Al2O3–Y2O3 composite coatings prepared by electrophoretic deposition

An area of major interest in biomedical engineering is currently the development of improved materials for medical implants. Research efforts are being focused on the investigation of surface modification methods for metallic prostheses due to the fundamental bioinert character of these materials and the possible ion release from their surfaces, which could potentially induce the interfacial loosening of devices after implantation. Electron beam (EB) structuring is a novel technique to control the surface topography in metals. Electrophoretic deposition (EPD) offers the feasibility to deposit at room temperature a variety of materials on conductive substrates from colloidal suspensions under electric fields. In this work single layers of chitosan composite coatings containing titania nanoparticles (n-TiO2) were deposit by EPD on electron beam (EB) structured Ti6Al4V titanium alloy. Surface structures were designed following different criteria in order to develop specific topography on the Ti6Al4V substrate. n-TiO2 particles were used as a model particle in order to demonstrate the versatility of the proposed technique for achieving homogenous chitosan based coatings on structured surfaces. A linear relation between EPD time and deposition yield on different patterned Ti6Al4V surfaces was determined under constant voltage conditions, obtaining homogeneous EPD coatings which replicate the 3D structure (pattern) of the substrate surface. The present results show that a combination of both techniques can be considered a promising surface modification approach for metallic implants, which should lead to improved interaction between the implant surface and the biological environment for orthopaedic applications.

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Preparation of Hydroxyapatite/Chitosan Biological Coatings on Carbon/Carbon Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.502 ◽

2010 ◽

Vol 434-435 ◽

pp. 502-505

Author(s):

Ying Hua Li ◽

Li Yun Cao ◽

Jian Feng Huang ◽

Xie Rong Zeng

Keyword(s):

Heat Treatment ◽

Electrophoretic Deposition ◽

Isopropyl Alcohol ◽

Raw Materials ◽

Composite Coatings ◽

Thermal Conditions ◽

Hydrothermal Condition ◽

Subsequent Heat Treatment ◽

Carbon Composites ◽

Deposition Voltage

Hydroxyapatite/Chitosan (HAp/CS) bio-coatings were prepared on the surface of carbon/ carbon (C/C) composites by hydrothermal electrophoretic deposition, using sonochemical process resulted HAp nanoparticles, isopropyl alcohol and chitosan as raw materials. The influences of hydro- thermal conditions and deposition voltage on the microstructures and morphologies of the as-prepared coatings were investigated. It was shown that homogenous and dense HAp/CS coatings on C/C composites are obtained by hydrothermal electrophoretic deposition. With the increase of deposition voltage, density and homogeneity of the as-prepared HAp/CS composite coatings are well improved. Due to the growth of HAp nanoparticles in the hydrothermal condition, the subsequent heat treatment of the HAp/CS coatings is not needed.

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Electrophoretic deposition of silica and its composite coatings on Ti-6Al-4V, and its in vitro corrosion behaviour for biomedical applications

Materials Science and Engineering C ◽

10.1016/j.msec.2016.10.075 ◽

2017 ◽

Vol 71 ◽

pp. 879-890 ◽

Cited By ~ 17

Author(s):

M. Chellappa ◽

U. Vijayalakshmi

Keyword(s):

Electrophoretic Deposition ◽

Biomedical Applications ◽

Corrosion Behaviour ◽

Composite Coatings

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Alginate/Bioglass® composite coatings on stainless steel deposited by direct current and alternating current electrophoretic deposition

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2013.01.042 ◽

2013 ◽

Vol 233 ◽

pp. 49-56 ◽

Cited By ~ 53

Author(s):

Qiang Chen ◽

Luis Cordero-Arias ◽

Judith A. Roether ◽

Sandra Cabanas-Polo ◽

Sannakaisa Virtanen ◽

...

Keyword(s):

Stainless Steel ◽

Electrophoretic Deposition ◽

Direct Current ◽

Composite Coatings ◽

Alternating Current

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Electrophoretic deposition of chitosan/Bioglass® and chitosan/Bioglass®/TiO2 composite coatings for bioimplants

Ceramics International ◽

10.1016/j.ceramint.2016.05.178 ◽

2016 ◽

Vol 42 (12) ◽

pp. 14206-14213 ◽

Cited By ~ 26

Author(s):

Silvia Clavijo ◽

Francisco Membrives ◽

Gisela Quiroga ◽

Aldo R. Boccaccini ◽

María J. Santillán

Keyword(s):

Electrophoretic Deposition ◽

Composite Coatings

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Electrophoretic Deposition of Lignin Reinforced Polymer Coatings

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.247 ◽

2015 ◽

Vol 654 ◽

pp. 247-251 ◽

Cited By ~ 2

Author(s):

M. Federica de Riccardis ◽

Daniela Carbone ◽

Daniela Cuna

Keyword(s):

Melting Point ◽

Carbonyl Group ◽

Electrophoretic Deposition ◽

Composite Coatings ◽

Polymer Coatings ◽

Chemical Interactions ◽

Coating Adhesion ◽

Beneficial Effects ◽

Reinforced Polymer ◽

Conductive Substrates

Composite coatings based on PEEK and Lignin were obtained by EPD. The addition of Lignin had some beneficial effects, the most relevant being an increased coating adhesion on conductive substrates. Before using in EPD suspensions, Lignin was functionalised by a carbonyl group. This functionalisation produced chemical interactions between PEEK powder and Lignin, and, as a consequence, better results in terms of both EPD efficiency and adhesion coating. Moreover, the addition of Lignin increased the hydrophobicity of PEEK coatings when they were thermally treated at temperature lower than the melting point of PEEK.

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