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Surface modification methods to improve the tribo-corrosion behavior of Ti6Al4V: A review

Philip, JT and Ananthakrishnan, R and Roy, RB and Sundaresan, A and Santhan, R (2023) Surface modification methods to improve the tribo-corrosion behavior of Ti6Al4V: A review. In: International Conference on Materials, Energy and Mechanical Engineering 2021, ICME2 2021, 17- 18 December 2021, Madanapalle, Andhra Pradesh.

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Official URL: https://doi.org/10.1063/5.0134145


Tribo-corrosion is defined as an irreversible transformation of material resulting from simultaneous physio-chemical and mechanical surface interactions occurring in a tribological contact. Implant materials are subjected to relative movements, which can cause wear damage, together with corrosive attack of the body fluids. Ti-6Al-4V alloy has been widely used for this purpose due to its superior biocompatibility and excellent corrosion resistance and good mechanical properties. Fretting corrosion is an important subdivision of tribo-corrosion, refers to the degradation of a substance subjected to mechanical damage and chemical dissolution due to slight amplitude movement. A tribo-corrosion condition in which material degradation is accelerated by the presence of micro motions and a hostile environment. The incidence and severity of fretting-related failures depend on several factors related to mechanically assisted corrosion phenomena. The tribo-corrosion phenomenon can be deleterious and destructive where by decreasing the life time of the hip implant replacement and causing reactions due to release of debris that can cause toxicity to osteocytes around the stem part of the hip implant. Tribo-corrosion can lead to the damage or even complete removal of the passive film from the contact surface, resulting in wear-accelerated-corrosion and corrosion-accelerated-wear. In most cases, the material loss caused by tribo-corrosion is greater than the simple sum of pure mechanical wear and static corrosion. In this paper, various surface modification methods to delimit the tribo-corrosion phenomena in Ti6Al4V are summarized. The tribological and corrosion characteristics of titanium can be considerably improved by using ceramics such as ZrO2. The use of lasers to modify the surface of titanium and its alloys is interesting since it could expand their use as wear and tribo-corrosion resistant materials. Furthermore, laser surface cladding is widely used in the industry to improve the surface qualities of engineering components.

Item Type: Conference Paper
Publication: AIP Conference Proceedings
Publisher: American Institute of Physics Inc.
Additional Information: The copyright for this article belongs to the American Institute of Physics Inc.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 14 Jul 2023 06:17
Last Modified: 14 Jul 2023 06:17
URI: https://eprints.iisc.ac.in/id/eprint/82392

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