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- Ng, B. S.Sch. of Mech. and Prod. Engineering, Division of Materials Engineering, Nanyang Technol. Univ., 50 N., Singapore (author)
Characterisation of a duplex TiO2/CaP coating on Ti6Al4V for hard tissue replacement
- Article/chapterEnglish2005
Publisher, publication year, extent ...
- Elsevier BV,2005
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:hj-16644
- https://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-16644URI
- https://doi.org/10.1016/j.biomaterials.2004.04.022DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- An initial TiO2 coating was applied on Ti6Al4V by electrochemical anodisation in two dissimilar electrolytes. The secondary calcium phosphate (CaP) coating was subsequently applied by immersing the substrates in a simulated body fluid (SBF) with three times concentration (SBF×3), mimicking biomineralisation of biological bone. Electrochemical impedance spectroscopy and potentiodynamic polarisation assessments in SBF revealed that the anodic TiO2 layer is compact, exhibiting up to four-folds improvement in in vitro corrosion resistance over unanodised Ti6Al4V. X-ray photoelectron spectroscopy analysis indicates that the anodic Ti oxide is thicker than air-formed ones with a mixture of TiO2-x compound between the TiO2/Ti interfaces. The morphology of the dense CaP film formed, when observed using scanning electron microscopy, is made up of linked globules 0.1-0.5ÎŒm in diameter without observable delamination. Fourier transform infrared spectrometry with an attenuated total internal reflection analysis revealed that this film is an amorphous/poorly crystallised calcium-deficient-carbonated CaP system. The calculated Ca:P ratios of all samples (1.14-1.28) are lower than stoichiometric hydroxyapatite (1.67). These results show that a duplex coating consisting of (1) a compact TiO2 with enhanced in vitro corrosion resistance and (2) bone-like apatite coating can be applied on Ti6Al4V by anodisation and subsequent immersion in SBF. © 2004 Elsevier Ltd. All rights reserved.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Materialteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Materials Engineering hsv//eng
- Biocompatibility
- Biomimetic
- Calcium phosphate
- Corrosion
- SBF
- Titanium oxide
- Body fluids
- Calcium compounds
- Characterization
- Corrosion resistance
- Crystallization
- Delamination
- Electrochemistry
- Electrolytes
- Fourier transform infrared spectroscopy
- Scanning electron microscopy
- Stoichiometry
- Titanium oxides
- Calcium phosphate (CaP)
- Potentiodynamic polarization
- Simulated body fluids (SBF)
- Bone
- biomaterial
- calcium
- carbon
- electrolyte
- titanium dioxide
- biomimetic material
- titanium
- titanium alloy (TiAl6V4)
- article
- body fluid
- bone mineralization
- computer interface
- concentration response
- correlation analysis
- cross linking
- electrode
- film
- Fourier analysis
- immersion
- impedance
- material coating
- polarization
- potentiometry
- priority journal
- reaction analysis
- simulation
- structure analysis
- thickness
- tissue engineering
- tissue repair
- X ray photoelectron spectroscopy
- bone prosthesis
- chemistry
- evaluation
- materials testing
- surface property
- Biomimetic Materials
- Bone Substitutes
- Calcium Phosphates
- Coated Materials
- Biocompatible
- Surface Properties
Added entries (persons, corporate bodies, meetings, titles ...)
- Annergren, I.Singapore Inst. of Mfg. Technology (author)
- Soutar, A. M.Singapore Inst. of Mfg. Technology (author)
- Khor, K. A.Sch. of Mech. and Prod. Engineering, Division of Materials Engineering, Nanyang Technol. Univ., 50 N., Singapore (author)
- Jarfors, A. E. W.Singapore Inst. of Mfg. Technology(Swepub:hj)jarand (author)
- Sch. of Mech. and Prod. Engineering, Division of Materials Engineering, Nanyang Technol. Univ., 50 N., SingaporeSingapore Inst. of Mfg. Technology (creator_code:org_t)
Related titles
- In:Biomaterials: Elsevier BV26:10, s. 1087-10950142-96121878-5905
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