Mechanical and biological properties of atmospheric plasma-sprayed carbon nanotube-reinforced tantalum pentoxide composite coatings on Ti6Al4V alloy

Lin, Wei‐Ting; Lin, Zhiyun; Kuo, Tsung-Yuan; Chien, Chi-Sheng; Huang, Junwei; Chung, Yong-Woo; Chang, Ching‐Ping; Ibrahim, Mahmoud Z.; Lee, H.T.

doi:10.1016/j.surfcoat.2022.128356

Cited by 12 publications

(4 citation statements)

References 70 publications

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“…The mechanical properties of the samples were quanti ed by microhardness measurements along the depth direction of coatings from the coating layer (under surface 50 µm), interface to substrate using a Vickers microhardness tester (Mitutoyo HM-1300, Japan) with an applied load of 300 g and a load-dwell time of 5 s. Although the Ta powder is composed mainly of Ta, it also contains a small amount of O, most likely originating from the SEM chamber environment or the spontaneous oxidation of the Ta powder [37,38].…”

Section: Morphology Chemical Composition and Microhardnessmentioning

confidence: 99%

Comparison of laser cladding properties of tantalum and tantalum pentoxide powders on titanium substrates

Li,

Hsieh,

Lin

et al. 2024

Int J Adv Manuf Technol

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Tantalum (Ta) has excellent mechanical properties, biocompatibility, and corrosion resistance. However, its application is limited by its high cost. Tantalum pentoxide (Ta 2 O 5 ), a stable oxide of Ta, is a key role of Ta surface with excellent biological properties and corrosion resistance and has the advantage of a lower cost. In this study, Ta and Ta 2 O 5 powders were preplaced on titanium (Ti) substrates and irradiated by a diode laser to form single-layer single-pass coatings. For comparison purposes, the scanning process was performed using a range of laser powers (1000, 1500, and 2000 W) and scanning speeds (3-5, 4.5-7.5, and 6-10 mm/s). The Ta coatings showed no surface cracking. However, spherical pores were observed near the fusion line of the coating with the substrate in some samples. The porosity increases with the decrease of laser powers and the scanning speeds. The formation of these pores was attributed mainly to the evaporation of the Ti substrate during the cladding process and the subsequent entrapment of the vapor bubbles within the coating. The Ta 2 O 5 coatings showed almost no pores but exhibited few transverse cracks on the coating surface as a result of the thermal expansion coe cient mismatch between the ceramic coating and metallic substrate. For all of the coatings, the coating hardness was signi cantly higher than that of the substrate. The Ta 2 O 5 coatings (580-700 HV) showed a higher hardness than the Ta coatings (350-400 HV). Moreover, the coating hardness remained approximately constant through the coating depth, whereas that of the Ta coatings showed a notable reduction with an increasing distance from the coating surface.

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Section: Morphology Chemical Composition and Microhardnessmentioning

confidence: 99%

Comparison of laser cladding properties of tantalum and tantalum pentoxide powders on titanium substrates

Li,

Hsieh,

Lin

et al. 2024

Int J Adv Manuf Technol

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“…Karpagavalli et al 33 described that nanotopography produced on Ti 6 Al 4 V via deposition of nanostructured TiO 2 enhanced biocomptability by reducing the integration of human aortic smooth muscle cells. Lin et al 34 coated Ti 6 Al 4 V with Ta 2 O 5 -containing carbon nanotubes via the atmospheric plasma spraying technique. They found that adding this coating improves indentation fracture toughness without degrading the inherent biological property of the material.…”

Section: Introductionmentioning

confidence: 99%

Fine-Tuning the Nanostructured Titanium Oxide Surface for Selective Biological Response

Rawat,

Benčina,

Paul

et al. 2023

ACS Appl. Bio Mater.

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Cardiovascular diseases are a pre-eminent global cause of mortality in the modern world. Typically, surgical intervention with implantable medical devices such as cardiovascular stents is deployed to reinstate unobstructed blood flow. Unfortunately, existing stent materials frequently induce restenosis and thrombosis, necessitating the development of superior biomaterials. These biomaterials should inhibit platelet adhesion (mitigating stent-induced thrombosis) and smooth muscle cell proliferation (minimizing restenosis) while enhancing endothelial cell proliferation at the same time. To optimize the surface properties of Ti 6 Al 4 V medical implants, we investigated two surface treatment procedures: gaseous plasma treatment and hydrothermal treatment. We analyzed these modified surfaces through scanning electron microscopy (SEM), water contact angle analysis (WCA), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) analysis. Additionally, we assessed in vitro biological responses, including platelet adhesion and activation, as well as endothelial and smooth muscle cell proliferation. Herein, we report the influence of pre/post oxygen plasma treatment on titanium oxide layer formation via a hydrothermal technique. Our results indicate that alterations in the titanium oxide layer and surface nanotopography significantly influence cell interactions. This work offers promising insights into designing multifunctional biomaterial surfaces that selectively promote specific cell types’ proliferation—which is a crucial advancement in next-generation vascular implants.

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Section: Introductionmentioning

confidence: 99%

“…Modification of the Ti6Al4V alloy surface is an important method used to effectively improve its surface properties [12,13]. Tantalum (Ta) has high hardness, excellent wear resistance, biocompatibility, as well as other important biological properties [12]. Moreover, Ta can provide better performance as regards corrosion resistance and biological activity 2 of 15 compared to Ti alloys.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Monolayer Ta and Multilayer Ta/Ti/Zr/Ta Coatings Deposited on Biomedical Ti-6Al-4V Alloy by Magnetron Sputtering

Zhao

Liu

Li³

et al. 2023

Coatings

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Two types of coatings, i.e., monolayer Ta and multilayer Ta/Ti/Zr/Ta coatings, were deposited on biomedical Ti6Al4V (TC4) alloy by magnetron sputtering to improve its performance. To evaluate the effect of the two coatings on the alloy properties, the microstructure, composition, mechanical and tribological properties, in vitro biocompatibility, and corrosion resistance were investigated. The results showed that α-Ta exists in the monolayer Ta coating, while α-Ta and β-Ta phases coexist in the multilayer Ta/Ti/Zr/Ta coating. The multilayer Ta/Ti/Zr/Ta coating possessed the highest hardness and the monolayer Ta coating had the lowest friction coefficient compared to the Ti6Al4V alloy. The friction and wear tests revealed that the anti-wear performance of the Ta coating is the best, followed by that of the Ta/Ti/Zr/Ta coating, while the anti-wear performance of TC4 alloy is relatively poor in comparison with the Ta and Ta/Ti/Zr/Ta coatings. The wear resistance of the multilayer Ta/Ti/Zr/Ta coating under low normal load is better than that under high load normal load. Finally, the in vitro and electrochemical corrosion tests showed that the Ta coating modification provides better biocompatibility and corrosion resistance than those of the uncoated Ti6Al4V alloy.

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Mechanical and biological properties of atmospheric plasma-sprayed carbon nanotube-reinforced tantalum pentoxide composite coatings on Ti6Al4V alloy

Cited by 12 publications

References 70 publications

Comparison of laser cladding properties of tantalum and tantalum pentoxide powders on titanium substrates

Comparison of laser cladding properties of tantalum and tantalum pentoxide powders on titanium substrates

Fine-Tuning the Nanostructured Titanium Oxide Surface for Selective Biological Response

Microstructure and Properties of Monolayer Ta and Multilayer Ta/Ti/Zr/Ta Coatings Deposited on Biomedical Ti-6Al-4V Alloy by Magnetron Sputtering

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