Journal ArticleDOI
Chemical and Structural Evolution of Sol-Gel-Derived Hydroxyapatite Thin Films under Rapid Thermal Processing
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In this paper, the chemical and structural evolution of hydroxyapatite thin films produced by sol-gel synthesis is characterized by ion beam analysis, X-ray diffraction, and Fourier transform infrared spectroscopy.Abstract:
Chemical and structural evolution of hydroxyapatite thin films produced by sol-gel synthesis is characterized by ion beam analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. Formation of the hydroxyapatite structure began at 500°C ; no other phases were observed at higher temperatures. Elimination of residual organics was observed in the form of the disappearance of excess oxygen, hydrogen and carbon. Crystal size increases with increasing anneal temperature ; spectroscopy indicates the formation of highly crystalline films. The analytical methods chosen provide insight into subtle chemical and structural changes which occur in films produced by this synthetic route.read more
Citations
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Processing and properties of hydroxyapatite-based biomaterials for use as hard tissue replacement implants
TL;DR: A review of the past, present, and future of the hydroxyapatite (HAp)-based biomaterials from the point of view of preparation of hard tissue replacement implants is presented in this paper.
Journal ArticleDOI
Calcium Phosphate Bioceramics: A Review of Their History, Structure, Properties, Coating Technologies and Biomedical Applications.
Noam Eliaz,Noah Metoki +1 more
TL;DR: A wide variety of CaPs are presented, from the individual phases to nano-CaP, biphasic and triphasic CaP formulations, composite CaP coatings and cements, functionally graded materials (FGMs), and antibacterial CaPs.
Journal ArticleDOI
Sol-gel based materials for biomedical applications
Gareth J Owens,Rajendra K. Singh,Farzad Foroutan,Mustafa Alqaysi,Cheol-Min Han,Chinmaya Mahapatra,Hae-Won Kim,Jonathan C. Knowles,Jonathan C. Knowles +8 more
TL;DR: A more detailed description of the biomedical areas where sol-gel materials have been explored and found to hold significant potential is given in this paper, where a generalized description of various solgel methods available and how these chemistries control the bulk properties of the end products is presented.
Journal ArticleDOI
Water-based sol–gel synthesis of hydroxyapatite: process development
TL;DR: Hydroxyapatite ceramics synthesized using a sol-gel route with triethyl phosphite and calcium nitrate as phosphorus and calcium precursors suggest its suitability for load-bearing uses.
Journal ArticleDOI
Sol-gel hydroxyapatite coatings on stainless steel substrates.
TL;DR: It seems quite promising that a dense and adhesive apatite coating can be achieved through water-based sol gel technology after short-term annealing at around 400 degrees C in air.
References
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Journal ArticleDOI
Novel infrared spectroscopic method for the determination of crystallinity of hydroxyapatite minerals.
TL;DR: IR indices of crystallinity have been developed for both well crystallized and poorly crystallized HA derivatives, and a preliminary application of the method to a microscopic biological sample (rat epiphyseal growth plate) is illustrated.
Journal ArticleDOI
Fixation of hip prostheses by hydroxyapatite ceramic coatings
RJ Furlong,JF Osborn +1 more
TL;DR: In this paper, the authors report the histological findings in post-mortem specimens obtained ten days, 17 days and seven weeks after implantation of hydroxyapatite-coated femoral components of hip arthroplasties.
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Spectra structure correlations in hydroxy and fluorapatite
C.B. Baddiel,E.E. Berry +1 more
TL;DR: The infra-red spectra of synthetic hydroxyapatite, Ca 10 (PO 4 ) 6 (OH) 2, and mineral fluoraphatite over the range 4000-250 cm −1 are reported in this article.
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Pulsed laser deposition and processing of biocompatible hydroxylapatite thin films.
TL;DR: In this paper, the Ca/P ratio and surface morphology of the films were related to deposition conditions, and it was shown that films that were amorphous (deposited either at room temperature or in a non-reactive gas environment) did not adhere well to the substrates.
Journal ArticleDOI
Hydroxyapatite coatings by a polymeric route
T. Brendel,A. Engel,C. Rüssel +2 more
TL;DR: A new polymeric route using calcium nitrate and phenyldichlorophosphine as initial compounds and acetone as solvent is described in this article, which is a new approach for polymeric polymers.