Effects of varying electrodeposition voltages on surface morphology and corrosion behavior of multi-walled carbon nanotube coated on porous Ti-30 at.%-Ta shape memory alloys

Hassan, A. A.; Yajid, Muhamad Azizi Mat; Saud, S. N.; Bakar, Tuty Asma Abu; Arshad, Azrina; Mazlan, Nurzafirah

doi:10.1016/j.surfcoat.2020.126257

Cited by 22 publications

(6 citation statements)

References 90 publications

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“…It seems that the microstructure of the coating is highly sensitive to the process parameters or even unstable, and this material system needs further investigation. There are no such results obtained for Ti or its alloys, but in [ 43 ], the corrosion rate in the presence of the MWCNTs coating was found to be 10-fold lower (0.0966 mm/year) compared to the uncoated porous Ti-30%Ta alloy. The other results [ 44 ] showed a remarkable increase in corrosion resistance for the MWCNTs-hydroxyapatite bi-layer.…”

Section: Resultsmentioning

confidence: 99%

Influence of Surface Modification of Titanium and Its Alloys for Medical Implants on Their Corrosion Behavior

et al. 2022

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Titanium and its alloys are often used for long-term implants after their surface treatment. Such surface modification is usually performed to improve biological properties but seldom to increase corrosion resistance. This paper presents research results performed on such metallic materials modified by a variety of techniques: direct voltage anodic oxidation in the presence of fluorides, micro-arc oxidation (MAO), pulse laser treatment, deposition of chitosan, biodegradable Eudragit 100 and poly(4-vinylpyridine (P4VP), carbon nanotubes, nanoparticles of TiO2, and chitosan with Pt (nano Pt) and polymeric dispersant. The open circuit potential, corrosion current density, and potential values were determined by potentiodynamic technique, and microstructures of the surface layers and coatings were characterized by scanning electron microscopy. The results show that despite the applied modifications, the corrosion current density still appears in the region of very low values of some nA/cm2. However, almost all surface modifications, designed principally for the improvement of biological properties, negatively influence corrosion resistance. The reasons for observed effects can vary, such as imperfections and permeability of some coatings or accelerated degradation of biodegradable deposits in simulated body fluids during electrochemical testing. Despite that, all coatings can be accepted for biological applications, and such corrosion testing results are presumed not to be of major importance for their applications in medicine.

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Section: Resultsmentioning

confidence: 99%

Influence of Surface Modification of Titanium and Its Alloys for Medical Implants on Their Corrosion Behavior

et al. 2022

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“…All these superiorities allow CNTs to have tremendous potential for nanotechnology fields, especially for use as composite fillers and reinforcements in order to enhance the mechanical, electrical, and thermal properties of resulting composite systems. Many potential applications for CNTs, including microwave absorption [ 8 , 9 ], corrosion protection [ 10 , 11 ], reinforced materials in natural fiber composites [ 12 , 13 ], electromagnetic interference shielding (EMI) [ 14 , 15 ], batteries [ 16 , 17 ], solar cells [ 18 , 19 , 20 , 21 ], chemical sensors [ 22 , 23 , 24 ], hydrogen storage [ 25 , 26 ], field-emission materials [ 27 , 28 ], and adsorbents [ 29 , 30 ], have been reported.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Functionalization, and Application of Carbon Nanotube-Reinforced Polymer Composite: An Overview

et al. 2021

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A novel class of carbon nanotube (CNT)-based nanomaterials has been surging since 1991 due to their noticeable mechanical and electrical properties, as well as their good electron transport properties. This is evidence that the development of CNT-reinforced polymer composites could contribute in expanding many areas of use, from energy-related devices to structural components. As a promising material with a wide range of applications, their poor solubility in aqueous and organic solvents has hindered the utilizations of CNTs. The current state of research in CNTs—both single-wall carbon nanotubes (SWCNT) and multiwalled carbon nanotube (MWCNT)-reinforced polymer composites—was reviewed in the context of the presently employed covalent and non-covalent functionalization. As such, this overview intends to provide a critical assessment of a surging class of composite materials and unveil the successful development associated with CNT-incorporated polymer composites. The mechanisms related to the mechanical, thermal, and electrical performance of CNT-reinforced polymer composites is also discussed. It is vital to understand how the addition of CNTs in a polymer composite alters the microstructure at the micro- and nano-scale, as well as how these modifications influence overall structural behavior, not only in its as fabricated form but also its functionalization techniques. The technological superiority gained with CNT addition to polymer composites may be advantageous, but scientific values are here to be critically explored for reliable, sustainable, and structural reliability in different industrial needs.

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“…The porous Ti-Ta alloys were prepared as substrates via a powder metallurgy method according to the procedures described in our previous publication. 19,20 Briefly, the Ti-30 at.% Ta alloy (further denoted as Ti-30Ta) was obtained by mixing the Ti and Ta powders at a weight % composition of 38.17% Ti and 61.83% Ta. The powder mixture was uniaxially compacted into 25 mm (diameter) and 10 mm length cylindrical using a hydraulic hand press machine and subsequently sintered in a microwave sintering furnace (HAMiLab-V3, SYNOTHERM Corp.) operated at 2.45 GHz at a rate of 20 C/min to 900 C for 30 min.…”

Section: Preparation Of Ti-ta Sma Substratesmentioning

confidence: 99%

The effect of CNTs/PEEK coating thickness on the friction and wear behavior of porous Ti‐30Ta alloys for biomaterial implants

Halim

Yajid

Hassan

et al. 2023

J of Applied Polymer Sci

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Electrophoretic deposition was used to deposit carbon nanotube/polyether ether ketone (CNTs/PEEK) composite coatings onto porous titanium‐tantalum (Ti‐30Ta) substrates at different PEEK concentrations (4.5, 6.0, and 7.5 mg/mL). Coatings were analyzed for thickness, porosity, surface roughness, microhardness and bonding strength, with higher PEEK concentrations producing thicker and more uniform coatings. However, optimal coating thickness showed highest bonding strength; lower and higher thickness led to decreased bonding strength. The tribological properties of the CNTs/PEEK coated Ti‐30Ta samples of different thicknesses (50, 70, and 100 μm) were evaluated using ball‐on‐flat linear reciprocating sliding tests under dry and wet conditions using simulated body fluid (SBF) as a lubricant. The CNTs/PEEK coatings provided excellent tribological protection under dry friction, with thicker coatings having lower friction and negligible wear. However, under wet sliding, the coating's wear rate increased significantly due to softening of the rubbing surface caused by SBF lubrication that increase transfer film onto the counter body surface. Coating with optimal thickness of 74 μm demonstrated the lowest friction and wear under SBF lubrication due to its highest hardness and bonding strength. This study highlights the importance of controlling coating thickness in determining the performance of the CNTs/PEEK coatings for orthopedic implants.

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Effects of varying electrodeposition voltages on surface morphology and corrosion behavior of multi-walled carbon nanotube coated on porous Ti-30 at.%-Ta shape memory alloys

Cited by 22 publications

References 90 publications

Influence of Surface Modification of Titanium and Its Alloys for Medical Implants on Their Corrosion Behavior

Influence of Surface Modification of Titanium and Its Alloys for Medical Implants on Their Corrosion Behavior

Fabrication, Functionalization, and Application of Carbon Nanotube-Reinforced Polymer Composite: An Overview

The effect of CNTs/PEEK coating thickness on the friction and wear behavior of porous Ti‐30Ta alloys for biomaterial implants

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