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Title: Effect of surface finish on the colour anodising of Ti-6Al-4V at various voltages
Authors: Kocabaş, Mustafa
Keywords: Ti-6Al-4V
anodic oxidation
colour anodising
surface preparation
Oxide Layers
Issue Date: 2022
Publisher: Taylor & Francis Ltd
Abstract: In this study, the colour anodising of a Ti-6Al-4V alloy in 0.05 M H3PO4 was investigated in the voltage range of 40-100 V. The Ti-6Al-4V substrates were anodised under two initial surface conditions: ground and unground. By means of ground samples, the native oxide layer was removed before anodising using conventional mechanical grinding techniques. After anodising, the changes in surface chemistry and topography were evaluated by performing Field Emission Scanning Electron Microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Depending on the initial surface finish (ground and unground) and the anodising voltage, different interference colours were obtained on the anodised surfaces. At low anodising voltages, the surfaces displayed relatively compact structures whereas higher voltages resulted in the formation of porosity, cracks, and blisters in both conditions. These changes also influenced the corrosion behaviour. The samples which were ground prior to anodising exhibited higher resistance to corrosion compared to the unground samples.
ISSN: 0020-2967
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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