Deposition of duplex MAO layer/nanostructured titanium dioxide composite coatings on Mg–1%Ca alloy using a combined technique of air plasma spraying and micro arc oxidation

Daroonparvar, Mohammadreza; Yajid, Muhamad Azizi Mat; Yusof, Noordin Mohd; Bakhsheshi‐Rad, Hamid Reza; Hamzah, Esah; Mardanikivi, Tina

doi:10.1016/j.jallcom.2015.07.200

Cited by 65 publications

(14 citation statements)

References 63 publications

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“…To reduce the production costs and to preserve the good performances of Ti and its alloys, duplex coatings were presented in recent years. [27][28][29][30][31][32][33][34] Although steel can be used as the substrate to reduce the production costs, the MAO process cannot be applied to steel directly, because the ferric oxide escapes from the substrate during oxidation process. Chang et al 35 presented a solution for this problem by first applying a coating of aluminum on the steel substrate using a thermal spraying technology.…”

Section: Introductionmentioning

confidence: 99%

The performance of titanium composite coatings obtained through thermal spraying and microarc oxidation

Huang

et al. 2021

Composites and Advanced Materials

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The development of composite coatings essential to improve the wear and corrosion resistances of the materials employed in numerous applications, such as automobile, chemical, medicine, construction, aerospace, and biomedical industries. In this study, we presented a double-layer coating technique, which consisted of a thermal-sprayed titanium (Ti) layer and a micro-arc oxidation (MAO) film on AISI 1020 steel. The effect of the composite coatings (Ti/MAO) on wear and corrosion resistance was investigated. To obtain a coating thickness from 250 µm to 450 µm, the prepared specimens were coated with Ti (99.9% pure) by arc spraying. Then, the Ti/MAO films were deposited on Ti coatings. The current density of MAO was fixed at 35 A/dm2, the voltages were 250, 300, 350, 400, and 450 V, and the duration of the MAO process was 10 min, Measurements of film thickness, microstructure, microhardness, X-ray diffractometry analysis, and scanning electron microscopic observation were performed for determining the characteristics of the composite coatings (Ti/MAO). Potentiodynamic polarization curves were used to compare the corrosion resistance of these composite coatings. A ball-on-disc wear test, using an oscillation friction wear tester, was carried out at room temperature according to the ASTM G99 standard to determine the wear resistance. Among all the specimens, Ti/MAO (400 V) had the greatest hardness, lowest friction coefficient, least weight loss, and longest sliding distance. The sliding distance of Ti/MAO (400 V) was about 1.7 times higher than those of Ti. The open-circuit potential of Ti/MAO (400 V) was about 1.7 times better than those of Ti. The corrosion currents of Ti/MAO (250 V) and Ti/MAO (400 V) were decreased by MAO about 95% and 92%, respectively. Although the corrosion current of Ti/MAO (400 V) was higher than that of Ti/MAO (250 V), Ti/MAO (400 V) had better effects in other tests. According to the results, Ti/MAO (400 V) presented the best performance among all the specimens and provided improved protection to both Ti and substrate.

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Section: Introductionmentioning

confidence: 99%

The performance of titanium composite coatings obtained through thermal spraying and microarc oxidation

Huang

et al. 2021

Composites and Advanced Materials

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“…The hardness of the coating is obviously improved than that of uncoated samples. It has been reported that the coating possess a good corrosion resistance [28][29][30]. The data of the potentiodynamic polarization and electrochemical impedance spectroscopy has proved this point.…”

Section: Discussionmentioning

confidence: 65%

Corrosion behavior and mechanism of MAO coated Ti6Al4V with a grain-fined surface layer

Chen

Yue

et al. 2016

Journal of Alloys and Compounds

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In order to enhance the corrosion behavior of Ti6Al4V, a MAO coating was prepared on the surface refined by ultrasonic cold forging technology (UCFT). The surface roughness value and the grain were evaluated by atomic force microscope (AFM) and transmission electron microscope (TEM). The microstructure and phase component of the coated samples were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The corrosion behavior of all the samples was examined by potentiodynamic polarization and electrode impedance spectroscopy (EIS) tests in a 3.5% NaCl solution. The results show that UCFT can reduce the surface roughness value and refine the grains. The micro-pore size of the UCFT-MAO sample is smaller and the pore number is less than those of MAO sample. The thickness of the coated sample is about 10 m. The UCFT-MAO sample possesses the highest micro-hardness among all the samples. The UCFT-MAO sample has the best corrosion resistance with the lowest corrosion current density and the highest electrochemical impedance, which is attributed to UCFT pretreatment prior to MAO process on titanium alloys. The influence of UCFT on the corrosion process and corrosion mechanism is discussed.

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“…Thickness of coating can be easily modulated [148] Disadvantages Expensive technique; may cause crystallization of bioactive glass [149] 5.1.3. Lithography…”

Section: Advantagesmentioning

confidence: 99%

Surface Engineering Strategies to Enhance the In Situ Performance of Medical Devices Including Atomic Scale Engineering

Sultana

Zare

Luo

et al. 2021

IJMS

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Decades of intense scientific research investigations clearly suggest that only a subset of a large number of metals, ceramics, polymers, composites, and nanomaterials are suitable as biomaterials for a growing number of biomedical devices and biomedical uses. However, biomaterials are prone to microbial infection due to Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Staphylococcus epidermidis (S. epidermidis), hepatitis, tuberculosis, human immunodeficiency virus (HIV), and many more. Hence, a range of surface engineering strategies are devised in order to achieve desired biocompatibility and antimicrobial performance in situ. Surface engineering strategies are a group of techniques that alter or modify the surface properties of the material in order to obtain a product with desired functionalities. There are two categories of surface engineering methods: conventional surface engineering methods (such as coating, bioactive coating, plasma spray coating, hydrothermal, lithography, shot peening, and electrophoretic deposition) and emerging surface engineering methods (laser treatment, robot laser treatment, electrospinning, electrospray, additive manufacturing, and radio frequency magnetron sputtering technique). Atomic-scale engineering, such as chemical vapor deposition, atomic layer etching, plasma immersion ion deposition, and atomic layer deposition, is a subsection of emerging technology that has demonstrated improved control and flexibility at finer length scales than compared to the conventional methods. With the advancements in technologies and the demand for even better control of biomaterial surfaces, research efforts in recent years are aimed at the atomic scale and molecular scale while incorporating functional agents in order to elicit optimal in situ performance. The functional agents include synthetic materials (monolithic ZnO, quaternary ammonium salts, silver nano-clusters, titanium dioxide, and graphene) and natural materials (chitosan, totarol, botanical extracts, and nisin). This review highlights the various strategies of surface engineering of biomaterial including their functional mechanism, applications, and shortcomings. Additionally, this review article emphasizes atomic scale engineering of biomaterials for fabricating antimicrobial biomaterials and explores their challenges.

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Deposition of duplex MAO layer/nanostructured titanium dioxide composite coatings on Mg–1%Ca alloy using a combined technique of air plasma spraying and micro arc oxidation

Cited by 65 publications

References 63 publications

The performance of titanium composite coatings obtained through thermal spraying and microarc oxidation

The performance of titanium composite coatings obtained through thermal spraying and microarc oxidation

Corrosion behavior and mechanism of MAO coated Ti6Al4V with a grain-fined surface layer

Surface Engineering Strategies to Enhance the In Situ Performance of Medical Devices Including Atomic Scale Engineering

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