Synthesis and characterization of nickel free titanium–hydroxyapatite composite coating over Nitinol surface through in-situ laser cladding and alloying

Chakraborty, Rajib; Raza, Mohammad Shahid; Datta, Susmita; Saha, Partha

doi:10.1016/j.surfcoat.2018.11.036

Cited by 33 publications

(27 citation statements)

References 35 publications

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“…In addition, hardness should be high enough to bear induced mechanical load after implantation. 32 , 43 …”

Section: Resultsmentioning

confidence: 99%

“…C c is the interfacial capacitance, and R p is the polarization resistance, inversely proportional to i corr (from Table 4 ) and expressed as R p = B / i corr , where B depends on material (substrate and coating) and solution. 32 Here, i passive is assumed equal to i corr , as the EIS test was done after polarization, and there were both HA and oxide layers on the wire surface. Four different materials were used in this study, and the trend of change in R p , according to i passive , should be considered for each material separately.…”

Section: Resultsmentioning

confidence: 99%

“…C c , R p , and i passive follow the same trend for each material and are on the same order of magnitude as reported in previous studies in the literature for HA-coated titanium and stainless steel. 23 , 32 , 49 …”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Improved Biocompatible, Flexible Mesh Composites for Implant Applications via Hydroxyapatite Coating with Potential for 3-Dimensional Extracellular Matrix Network and Bone Regeneration

Naderi

Zhang

Belgodere

et al. 2021

ACS Appl. Mater. Interfaces

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Hydroxyapatite (HA)-coated metals are biocompatible composites, which have potential for various applications for bone replacement and regeneration in the human body. In this study, we proposed the design of biocompatible, flexible composite implants by using a metal mesh as substrate and HA coating as bone regenerative stimulant derived from a simple sol–gel method. Experiments were performed to understand the effect of coating method (dip-coating and drop casting), substrate material (titanium and stainless steel) and substrate mesh characteristics (mesh size, weave pattern) on implant’s performance. HA-coated samples were characterized by X-ray diffractometer, transmission electron microscope, field-emission scanning electron microscope, nanoindenter, polarization and electrochemical impedance spectroscopy, and biocompatibility test. Pure or biphasic nanorod HA coating was obtained on mesh substrates with thicknesses varying from 4.0 to 7.9 μm. Different coating procedures and number of layers did not affect crystal structure, shape, or most intense plane reflections of the HA coating. Moduli of elasticity below 18.5 GPa were reported for HA-coated samples, falling within the range of natural skull bone. Coated samples led to at least 90% cell viability and up to 99.5% extracellular matrix coverage into a 3-dimensional network (16.4% to 76.5% higher than bare substrates). Fluorescent imaging showed no antagonistic effect of the coatings on osteogenic differentiation. Finer mesh size enhanced coating coverage and adhesion, but a low number of HA layers was preferable to maintain open mesh areas promoting extracellular matrix formation. Finally, electrochemical behavior studies revealed that, although corrosion protection for HA-coated samples was generally higher than bare samples, galvanic corrosion occurred on some samples. Overall, the results indicated that while HA-coated titanium grade 1 showed the best performance as a potential implant, HA-coated stainless steel 316 with the finest mesh size constitutes an adequate, lower cost alternative.

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“…In addition, hardness should be high enough to bear induced mechanical load after implantation. 32 , 43 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Improved Biocompatible, Flexible Mesh Composites for Implant Applications via Hydroxyapatite Coating with Potential for 3-Dimensional Extracellular Matrix Network and Bone Regeneration

Naderi

Zhang

Belgodere

et al. 2021

ACS Appl. Mater. Interfaces

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“…Recently, a few attempts have also been proposed to attain surface modifications of nitinol-based materials thus mitigating the risks associated with the presence of a potentially toxic, allergenic and carcinogenic component, i.e. nickel [17][18][19][20].…”

Section: Shape Memory Alloys (Smas)mentioning

confidence: 99%

Shape memory materials and 4D printing in pharmaceutics

Melocchi

Uboldi

Cerea

et al. 2021

Advanced Drug Delivery Reviews

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“…Therefore, Although titanium-based alloys have excellent mechanical properties, the exposed surface of titanium-based implants is easily affected by the environment and may cause complications. Therefore, it is necessary to improve the reliability of Ti-based implants to minimize certain biomechanical and biological function failure [13,14]. In order to overcome its harm to human body, titanium alloy must be surface modified to meet medical application requirements.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Biomedical Titanium Alloy: Micromorphology, Microstructure Evolution and Biomedical Applications

2019

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With the increasing demand for bone implant therapy, titanium alloy has been widely used in the biomedical field. However, various potential applications of titanium alloy implants are easily hampered by their biological inertia. In fact, the interaction of the implant with tissue is critical to the success of the implant. Thus, the implant surface is modified before implantation frequently, which can not only improve the mechanical properties of the implant, but also polish up bioactivity and osseoconductivity on a cellular level. This paper aims at reviewing titanium surface modification techniques for biomedical applications. Additionally, several other significant aspects are described in detail in this article, for example, micromorphology, microstructure evolution that determines mechanical properties, as well as a number of issues concerning about practical application of biomedical implants.

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Synthesis and characterization of nickel free titanium–hydroxyapatite composite coating over Nitinol surface through in-situ laser cladding and alloying

Cited by 33 publications

References 35 publications

Improved Biocompatible, Flexible Mesh Composites for Implant Applications via Hydroxyapatite Coating with Potential for 3-Dimensional Extracellular Matrix Network and Bone Regeneration

Improved Biocompatible, Flexible Mesh Composites for Implant Applications via Hydroxyapatite Coating with Potential for 3-Dimensional Extracellular Matrix Network and Bone Regeneration

Shape memory materials and 4D printing in pharmaceutics

Surface Modification of Biomedical Titanium Alloy: Micromorphology, Microstructure Evolution and Biomedical Applications

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