Multifunctional zirconium nitride/copper multilayer coatings on medical grade 316L SS and titanium substrates for biomedical applications

Kumar, D. Dinesh; Kaliaraj, Gobi Saravanan

doi:10.1016/j.jmbbm.2017.09.007

Cited by 46 publications

(15 citation statements)

References 54 publications

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“…The variation of Eoc with respect to time is shown in (Figure 2). It may be noted that the Eoc values of both bare SS and biocomposite coated SS showed a periodic variations in both positive and negative directions, suggested that the continuous passivation by forming a film on the surface and its subsequent failure, and such behaviour is very common in SS surface [32]. The rapid and random variations in Eoc may be attributed to the percolation of the electrolyte ions (chloride ions) into the interface, which is likely to be promoted by the porosity of k-Carrageenan-gelatin hybrid composite coating on SS.…”

Section: Electrochemical Analysismentioning

confidence: 99%

The benefits of k-Carrageenan-gelatin hybrid composite coating on the medical grade stainless steel (SS304) used as anticorrosive barrier

Muthulakshmi

Kumar

Rajasekar

et al. 2021

Materials Chemistry and Physics

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Biopolymers derived from seaweed are good anticorrosive, antibacterial and anticancer agents. These biopolymers family includes the k-Carrageenan with good potential anticorrosive feature that is extracted from the red seaweed Acanthophora spicifera -Rhodophyceae. To obtain the best corrosion inhibition properties the k -Carrageenan hybrid composite with gelatin was prepared by sol-gel method. In the present study, two natural compounds have been used to prepare the proposed hybrid composite material. Such as, a self-assembled multilayer coating for medical grade stainless steel (SS) 304 were formed as substrate which can resist successfully to mild condition (3.5 wt % of NaCl) in the chosen electrolyte medium. The analysis by FT-IR confirms the hybridation of gelatin and biopolymer of k -Carrageenan. The electrochemical results revealed that the coated SS 304 is a promising corrosion inhibition with an efficiency up to 97 % at 24h and up to 65% at 227 h.The Eoc values from open circuit potential analysis indicated the occurrence of passivation on the surface due to hybrid composite coating. Further, the electrochemical impedance spectroscopy showed that the resistance of hybrid composite is higher than the bare steel showing Rct of 6.1 k  cm 2 and 2.1 k  cm 2 , respectively. The microstructural analysis by Scanning Electron Microscopy (SEM) and atomic force microscopy (AFM) confirmed that the coating surface have better corrosion resistance than SS 304 bare metal.

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Section: Electrochemical Analysismentioning

confidence: 99%

The benefits of k-Carrageenan-gelatin hybrid composite coating on the medical grade stainless steel (SS304) used as anticorrosive barrier

Muthulakshmi

Kumar

Rajasekar

et al. 2021

Materials Chemistry and Physics

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“…Based on the above results, on the one hand, the coatings' blood compatibility was better than that of 316L, and on the other hand, it was significantly affected by the bias voltage. The coating with the rougher surface structure could capture platelets and result in their deformation [44,45]. Thus, the coating's blood compatibility improved when the RMS decreased at a higher bias voltage.…”

Section: Blood Compatibilitymentioning

confidence: 99%

The Effects of Substrate Bias on the Properties of HfC Coatings Deposited by RF Magnetron Sputtering

Wang

Ding

et al. 2021

Coatings

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In the paper, by using radio frequency (RF) magnetron sputter technology, the HfC coating grew on a 316L stainless steel substrate in an Ar atmosphere at various substrate bias voltages from 0 to −200 V. From the X-ray diffraction (XRD) and transmission electron microscopy (TEM) experiments, the HfC coatings were well crystallized and (111) preferential growth had been successfully obtained by controlling bias voltage at −200 V. Nanoindentation experimental results for the prepared HfC coatings indicated that they possessed the maximum nanohardness due to the formation of the (111) orientation. The results of electrochemical measurements displayed that 316L stainless steel (316L) coated with the HfC coatings had better corrosion resistance than bare 316L. With the bias voltage increasing to −200 V, adhesion of the 316L substrate with the HfC coating could be greatly improved, as well as corrosion resistance. The antithrombogenicity of the HfC coatings was identified by platelet adhesive and hemolytic ratio assay in vitro. It was shown that the hemocompatibility of coated 316L had been improved greatly compared with bare 316L and the HfC coatings possessed better antithrombogenicity with the bias voltage elevating above −150 V.

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“…Saline [28] Sodium hypochlorite [26] Sodium hydroxide [33] Improve osteoconduction and osteointegration [33] Enhance early stage of cell adhesion, proliferation, and differentiation [34] Cause precipitation of many minerals, higher wear resistance of the implant surface [28,[33][34][35] Aluminium Sand-blasting [37] Acid etching [37] Physiological fluids [15] Ti-Al coating [38] Enhance corrosion resistant [15] Improved osteoblast viability [22] Interfere osseointegration process [39] [15,22,[37][38][39]…”

Section: Sodiummentioning

confidence: 99%

“…In one study, SBF solution has been used during a coating procedure for Ti implants, causing precipitation of many minerals (e.g. Na, Ca, Mg, P) presented in the solution, which leads to a higher wear resistance of the implant surface [35]. A study done by Shibli et al revealed traces of Na contaminant along with carbon, O, N, Ca, Al, and O on the Ti surface of the failed implants.…”

Section: Sodium (Na)mentioning

confidence: 99%

Contamination of titanium dental implants: a narrative review

et al. 2020

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Contamination of titanium dental implants may lead to implant failure. There are two major types of contaminants: the inorganic and organic contaminants. The inorganic contaminants mostly consist of elements such as calcium, phosphorus, chlorine, sulphur, sodium, silicon, fluorine and some organic carbons. Whereas organic contaminants consist of hydrocarbon, carboxylates, salts of organic acids, nitrogen from ammonium and bacterial cells/byproducts. Contaminants can alter the surface energy, chemical purity, thickness and composition of the oxide layer, however, we lack clinical evidence that contaminations have any effect at all. However, surface cleanliness seems to be essential for implant osseointegration.These contaminants may cause dental implants to fail in its function to restore missing teeth and also cause a financial burden to the patient and the health care services to invest in decontamination methods. Therefore, it is important to discuss the aetiology of dental implant failures. In this narrative review, we discuss two major types of contaminants: the inorganic and organic contaminants including bacterial contaminants. This review also aims to discuss the potential effect of contamination on Ti dental implants.

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Multifunctional zirconium nitride/copper multilayer coatings on medical grade 316L SS and titanium substrates for biomedical applications

Cited by 46 publications

References 54 publications

The benefits of k-Carrageenan-gelatin hybrid composite coating on the medical grade stainless steel (SS304) used as anticorrosive barrier

The benefits of k-Carrageenan-gelatin hybrid composite coating on the medical grade stainless steel (SS304) used as anticorrosive barrier

The Effects of Substrate Bias on the Properties of HfC Coatings Deposited by RF Magnetron Sputtering

Contamination of titanium dental implants: a narrative review

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