Tribological Behavior of a Multi-walled Carbon Nanotube Coated Porous Ti-Ta Shape Memory Alloy

Hassan, A. A.; Yajid, Muhamad Azizi Mat; Saud, S. N.; Bakar, Tuty Asma Abu; Alsakkaf, Ahmed

doi:10.1007/s11665-022-07077-9

Cited by 2 publications

(3 citation statements)

References 81 publications

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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.…”

Section: Methodsmentioning

confidence: 99%

“…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%

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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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Section: Methodsmentioning

confidence: 99%

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

Self Cite

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“…Thereinto, carbon materials acquire more attention in virtue of their excellent mechanical properties, superior thermal and chemical stability, environmentally friendly property, and peculiar self-lubricating property . However, the commonly carbon lubricating materials, such as grapheme, fullerenes, carbon quantum dots, and carbon nanotubes, demand a complex synthesis process and massive energy inputs, which causes environmental pollution and increases production cost.…”

Section: Introductionmentioning

confidence: 99%

In Situ Graphene Formation Induced by Tribochemical Reaction for Sustainable Lubrication

Liu

Zheng

et al. 2023

ACS Sustainable Chem. Eng.

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Graphene is widely applied as lubricating materials owing to its superior tribological performances. However, its complex synthesis process causes environmental pollution and increases production cost. In the current work, we developed a facile strategy to construct a sustainable lubricant system by generating graphene in situ, which avoided the complicated graphene synthetic process. The novel lubricant system is constructed by introducing cyclopropanecarboxylic acid (CPCa) and metal particles (nickel and copper) into base oil. CPCa molecules undergo tribochemical reaction to produce hydrocarbons serving as the solid lubricant, and metal particles catalyze the graphitization of hydrocarbons. Importantly, friction products can be reused as lubricating additives for base oil and provide better lubrication performance compared with the original lubricant systems. This fully demonstrates the sustainable lubrication ability of friction products and their potential as recyclable lubricant additives. The present work provides a novel perspective for the design and development of green lubricant additives.

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Tribological Behavior of a Multi-walled Carbon Nanotube Coated Porous Ti-Ta Shape Memory Alloy

Cited by 2 publications

References 81 publications

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

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

In Situ Graphene Formation Induced by Tribochemical Reaction for Sustainable Lubrication

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