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TI6AL4V Surface Modification by Hydroxyapatite Powder Mixed Electric Discharge Machining for Medical Application

Opoz, TT, Yasar, H, Murphy, MF, Ekmekci, N and Ekmekci, B (2018) TI6AL4V Surface Modification by Hydroxyapatite Powder Mixed Electric Discharge Machining for Medical Application. In: 18th International Conference on Machine Design and Production , 2. (18th International Conference on Machine Design and Production, 03 July 2018 - 06 July 2018, Eskisehir, Turkey).

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Abstract

Titanium surface modification by the Hydroxyapatite (HA) mixed Electric Discharge Machining (EDM) is an alternative and promising technique to enhance the biocompatibility and to promote the biological performance in bone, which is dependent on surface properties, such as surface roughness, chemistry, and wettability. HA powder is used for the first time with electrical discharge machining to improve osteoblastic cell activity on the developed surfaces for TI6AL4V. Different HA concentrations in deionized water were tested as an experimental variable during EDM. Abrasive polishing and electrical discharge machined control surfaces without powder addition also analyzed to compare the results. The surface characteristics of analyzed samples were evaluated by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-Ray Diffractometry (XRD), white light interferometry, and contact angle measurements. The wettability tests suggest that the hydroxyapatite powder mixed EDM’ed surfaces shows highly hydrophilic characteristics compared the other surfaces, abrasive polished and EDM’ed without powder addition in the dielectric. The results from the MTT assay revealed that those surfaces modified using HA powder addition in distilled water dielectric liquid promoted the most significant cell attachment/growth. The results indicate that HA powder mixed EDM offers a promising method for the surface modification of biomaterials such as titanium alloys.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Ti6Al4V, surface modification, Hydroxyapatite, Powder Mixed Electrical Discharge; Machining, Osteoblast, Cell Attachment and Growth
Subjects: R Medicine > R Medicine (General)
R Medicine > RM Therapeutics. Pharmacology
T Technology > T Technology (General)
Divisions: General Engineering Research Institute
Pharmacy & Biomolecular Sciences
Publisher: METU- Ankara
Date Deposited: 22 Aug 2018 08:38
Last Modified: 22 Aug 2018 08:38
Editors: Kilic, SE and LOTFISADIGH, B
URI: http://researchonline.ljmu.ac.uk/id/eprint/8966

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