Wear studies on plasma sprayed Al2O3–40 wt% 8YSZ composite ceramic coating on Ti–6Al–4V alloy used for biomedical applications

Perumal, G.; Manivasagam, Geetha; Asokamani, R.; Alagumurthi, N.

doi:10.1016/j.wear.2013.12.027

Cited by 55 publications

(14 citation statements)

References 49 publications

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“…Usually, harder alloys have higher wear resistance than softer ones (Hacisalihoglu et al, 2015;Perumal et al, 2014). However, the amount of obtained wear particles from tribological tests performed in identical conditions was much higher on Ti-15Zr-15Mo system when compared to Ti-6Al-4V, even though Ti-15Zr-15Mo has a higher measured microhardness value, suggesting that different wear mechanisms are acting on these two Ti-alloys.…”

Section: Discussionmentioning

confidence: 99%

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Costa

Alves

Toptan

et al. 2019

Journal of the Mechanical Behavior of Biomedical Materials

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Titanium-based materials are widely employed by the biomedical industry in orthopedic and dental implants. However, when placed into the human body, these materials are highly susceptible to degradation processes, such as corrosion, wear, and tribocorrosion. As a consequence, metallic ions or particles (debris) may be released, and although several studies have been conducted in recent years to better understand the effects of their exposure to living cells, a consensual opinion has not yet been obtained. In this work, we produced metallicbased wear particles by tribological tests carried out on Ti-6Al-4V and Ti-15Zr-15Mo alloys. They were posteriorly physicochemically characterized according to their crystal structure, size, morphology, and chemical composition and compared to Ti-6Al-4V commercially available particles. Finally, adsorbed endotoxins were removed (by applying a specific thermal treatment) and endotoxin-free particles were used in cell experiments to evaluate effects of their exposure to human osteoblasts (MG-63 and HOb), namely cell viability/metabolism, proinflammatory cytokine production (IL-6 and PGE2), and susceptibility to internalization processes. Our results indicate that tribologically-obtained wear particles exhibit fundamental differences in terms of size (smaller) and morphology (irregular shapes and rough surfaces) when compared to the commercial ones. Consequently, both Ti-6Al-4V and Ti-15Zr-15Mo particles were able to induce more pronounced effects on cell viability (decrease) and cytokine production (increase) than did Ti-6Al-4V commercial particles. Furthermore, both types of wear particles penetrated osteoblast membranes and were internalized by the cells. Influences on cytokine production by endotoxins were also demonstrated.

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Section: Discussionmentioning

confidence: 99%

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Costa

Alves

Toptan

et al. 2019

Journal of the Mechanical Behavior of Biomedical Materials

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“…for artificial implant applications [24]. Hence, three major influencing wear parameters were taken for the range of applied load 2 to 6N, sliding velocity of 0.25 to 0.75m/s and sliding distance of 500 to 1500m.…”

Section: Methodsmentioning

confidence: 99%

Wear behavior of γ-irradiated Ti6Al4V alloy sliding on TiN deposited steel surface

Saravanan

Perumal

2016

Tribology International

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“…The details of wear track examination and the wear mechanism for composite coating is presented elsewhere. 41 The wear track morphology of the plasma-sprayed Al 2 O 3 -40wt%8YSZ coating tested against an alumina ball shows a network of fine cracks and chipping over the zirconia-rich splat. It indicates that the Al 2 O 3 -40-wt%8YSZ composite coating possesses higher intersplat cohesion strength, which enhances its wear resistance.…”

Section: Microstructure Of the Ti-6al-4v Alloymentioning

confidence: 99%

Wear studies on plasma-sprayed Al2O3 and 8mole% of Yttrium-stabilized ZrO2 composite coating on biomedical Ti-6Al-4V alloy for orthopedic joint application

Ganapathy¹,

Manivasagam

Rajamanickam

et al. 2015

IJN

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This paper presents the wear characteristics of the composite ceramic coating made with Al2O3-40wt%8YSZ on the biomedical grade Ti-6Al-4V alloy (grade 5) used for total joint prosthetic components, with the aim of improving their tribological behavior. The coatings were deposited using a plasma spraying technique, and optimization of plasma parameters was performed using response surface methodology to obtain dense coating. The tribological behaviors of the coated and uncoated substrates were evaluated using a ball-on-plate sliding wear tester at 37°C in simulated body-fluid conditions. The microstructure of both the titanium alloy and coated specimen were examined using an optical microscope and scanning electron microscope. The hardness of the plasma-sprayed alumina–zirconia composite coatings was 2.5 times higher than that of the Ti-6Al-4V alloy, while the wear rate of Ti-6Al-4V alloy was 253 times higher than that of the composite-coated Ti-6Al-4V alloy. The superior wear resistance of the alumina–zirconia coated alloy is attributed to its enhanced hardness and intersplat bonding strength. Wear-track examination showed that the predominant wear mechanism of Ti-6Al-4V alloy was abrasive and adhesive wear, whereas, in the case of alumina–zirconia composite coated alloy, the wear was dominated by microchipping and microcracking.

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Wear studies on plasma sprayed Al2O3–40 wt% 8YSZ composite ceramic coating on Ti–6Al–4V alloy used for biomedical applications

Cited by 55 publications

References 49 publications

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Wear behavior of γ-irradiated Ti6Al4V alloy sliding on TiN deposited steel surface

Wear studies on plasma-sprayed Al2O3 and 8mole% of Yttrium-stabilized ZrO2 composite coating on biomedical Ti-6Al-4V alloy for orthopedic joint application

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Wear studies on plasma sprayed Al2O3–40 wt% 8YSZ composite ceramic coating on Ti–6Al–4V alloy used for biomedical applications

Cited by 55 publications

References 49 publications

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Exposure effects of endotoxin-free titanium-based wear particles to human osteoblasts

Wear behavior of γ-irradiated Ti6Al4V alloy sliding on TiN deposited steel surface

Wear studies on plasma-sprayed Al2O3 and&nbsp;8mole% of Yttrium-stabilized ZrO2 composite coating on biomedical Ti-6Al-4V alloy for orthopedic joint application

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Wear studies on plasma-sprayed Al2O3 and 8mole% of Yttrium-stabilized ZrO2 composite coating on biomedical Ti-6Al-4V alloy for orthopedic joint application