Morphological, Chemical, and Biological Investigation of Ionic Substituted, Pulse Current Deposited Calcium Phosphate Coatings

Furkó, Mónika; Balázsi, Csaba

doi:10.3390/ma13204690

Cited by 15 publications

(13 citation statements)

References 69 publications

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“…For example, consider the deposition of CaPO 4 doped with Ag or other metals. Namely, Ag-doped CaPO 4 has been deposited using sol-gel [824,825], electrochemical [826], electrophoretic [827,828] depositions, magnetron sputtering [829][830][831], thermal [832], plasma [833,834] and cold [835] spray, IBAD [836], PLD [837] and thermal substrate [838] techniques, while Sr [486,839], Zn [840] and Si [486,841] doped CaPO 4 were deposited using biomimetic techniques. However, this in no way implies that CaPO 4 doped with Sr, Zn, Si and other dopants can only be deposited by biomimetic techniques [833,[842][843][844].…”

Section: Deposition Of Ion-substituted Capo 4 and Capo 4 -Containing ...mentioning

confidence: 99%

There Are over 60 Ways to Produce Biocompatible Calcium Orthophosphate (CaPO4) Deposits on Various Substrates

Dorozhkin

2023

J. Compos. Sci.

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A The present overview describes various production techniques for biocompatible calcium orthophosphate (abbreviated as CaPO4) deposits (coatings, films and layers) on the surfaces of various types of substrates to impart the biocompatible properties for artificial bone grafts. Since, after being implanted, the grafts always interact with the surrounding biological tissues at the interfaces, their surface properties are considered critical to clinical success. Due to the limited number of materials that can be tolerated in vivo, a new specialty of surface engineering has been developed to desirably modify any unacceptable material surface characteristics while maintaining the useful bulk performance. In 1975, the development of this approach led to the emergence of a special class of artificial bone grafts, in which various mechanically stable (and thus suitable for load-bearing applications) implantable biomaterials and artificial devices were coated with CaPO4. Since then, more than 7500 papers have been published on this subject and more than 500 new publications are added annually. In this review, a comprehensive analysis of the available literature has been performed with the main goal of finding as many deposition techniques as possible and more than 60 methods (double that if all known modifications are counted) for producing CaPO4 deposits on various substrates have been systematically described. Thus, besides the introduction, general knowledge and terminology, this review consists of two unequal parts. The first (bigger) part is a comprehensive summary of the known CaPO4 deposition techniques both currently used and discontinued/underdeveloped ones with brief descriptions of their major physical and chemical principles coupled with the key process parameters (when possible) to inform readers of their existence and remind them of the unused ones. The second (smaller) part includes fleeting essays on the most important properties and current biomedical applications of the CaPO4 deposits with an indication of possible future developments.

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Section: Deposition Of Ion-substituted Capo 4 and Capo 4 -Containing ...mentioning

confidence: 99%

There Are over 60 Ways to Produce Biocompatible Calcium Orthophosphate (CaPO4) Deposits on Various Substrates

Dorozhkin

2023

J. Compos. Sci.

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“…Tribocorrosion experiments were performed in a three-electrode cell, using an Ag/AgCl/KCl sat electrode as reference, a platinum wire as counter electrode, and the sample (film + substrate) as working electrode. Physiological Ringer's solution was selected as electrolyte, which was kept at a controlled temperature, simulating the human body fluid and composed as follows: 9 g/L NaCl, 0.43 g/L KCl, 0.2 g/L NaHCO 3 , 0.24 g/L CaCl 2 , according to the literature [32,33]. The tribocorrosion test under open cell voltage (OCV) condition was divided into three stages, including soaking, sliding, and passivation.…”

Section: Tribocorrosion Characterizationmentioning

confidence: 99%

Magnetron Sputtering of Au-Based Alloys on NiTi Elements: Surface Investigation for New Products in SMA-Based Fashion and Luxury Accessories and Watchmaking

et al. 2022

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A novel approach for the deposition of Au-based coatings on NiTi components was proposed to give rise to innovative SMA-based products for the fashion, luxury, and watchmaking fields. Different Au-Cu and Au-Ag-Cu alloys (with confidential compositions within the color designations 2N, 4N, and 5N) were deposited by magnetron sputtering on superelastic and shape-memory NiTi ribbons. After preliminary morphological and microstructural characterizations, the influence of the film deposition on the functional, mechanical, and tribological behavior was deeply investigated. The macroscopic mechanical properties, including the damping, superelastic, and shape recovery characteristics, were not affected since the behavior upon both small and severe deformations was unchanged and the coatings were not damaged. Indeed, both the film adhesion and the precious aspect were maintained. Furthermore, a more detailed surface characterization, through nanoindentation, tribocorrosion, and scratch and wear tests, was performed. This experimental investigation evidenced the ductile behavior of the Au-based films and their good adhesion on NiTi substrates. Moreover, the coatings exhibited a good wear resistance, both in dry conditions and simulated body fluids, which proved to be suitable for fashion and watchmaking fields. Despite slight differences being observed within the films’ responses, all of them could be considered suitable and interesting for the design of smart luxury accessories, proving that the chosen deposition process is sound and reliable for these applications.

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“…There are many advantages of the CP coatings, such as their chemical structure being close to the bone and thus providing good fixation and decreased osseointegration time [ 8 ]. The biocompatibility characteristic can be advanced even more by adding bioactive minerals (Mg, Zn, Sr) into the CaP phase [ 9 , 10 , 11 ]. The mineral addition favors the formation of amorphous CaP phases or different nanocrystalline apatite structures over the crystalline hydroxyapatite [ 12 ], which makes the layer biodegradability faster [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Biominerals Added Bioresorbable Calcium Phosphate Loaded Biopolymer Composites

Furkó

Horváth

Czömpöly

et al. 2022

IJMS

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Nanocrystalline calcium phosphate (CP) bioceramic coatings and their combination with biopolymers are innovative types of resorbable coatings for load-bearing implants that can promote the integration of metallic implants into human bodies. The nanocrystalline, amorphous CP particles are an advantageous form of the various calcium phosphate phases since they have a faster dissolution rate than that of crystalline hydroxyapatite. Owing to the biomineral additions (Mg, Zn, Sr) in optimized concentrations, the base CP particles became more similar to the mineral phase in human bones (dCP). The effect of biomineral addition into the CaP phases was thoroughly studied. The results showed that the shape, morphology, and amorphous characteristic slightly changed in the case of biomineral addition in low concentrations. The optimized dCP particles were then incorporated into a chosen polycaprolactone (PCL) biopolymer matrix. Very thin, non-continuous, rough layers were formed on the surface of implant substrates via the spin coating method. The SEM elemental mapping proved the perfect incorporation and distribution of dCP particles into the polymer matrix. The bioresorption rate of thin films was followed by corrosion measurements over a long period of time. The corrosion results indicated a faster dissolution rate for the dCP-PCL composite compared to the dCP and CP powder layers.

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Morphological, Chemical, and Biological Investigation of Ionic Substituted, Pulse Current Deposited Calcium Phosphate Coatings

Cited by 15 publications

References 69 publications

There Are over 60 Ways to Produce Biocompatible Calcium Orthophosphate (CaPO4) Deposits on Various Substrates

There Are over 60 Ways to Produce Biocompatible Calcium Orthophosphate (CaPO4) Deposits on Various Substrates

Magnetron Sputtering of Au-Based Alloys on NiTi Elements: Surface Investigation for New Products in SMA-Based Fashion and Luxury Accessories and Watchmaking

Biominerals Added Bioresorbable Calcium Phosphate Loaded Biopolymer Composites

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