Metallurgy, Vol. 57 No. 1-2, 2018.
Original scientific paper
Colouring titanium alloys by anodic oxidation
G. Napoli
orcid.org/0000-0003-4215-1555
; Università di Perugia, Dipartimento di Ingegneria, Perugia, Italy
M. Paura
; Seamthesis, Nera Montoro (Terni), Italy
T. Vela
; Seamthesis, Nera Montoro (Terni), Italy
A. Di Schino
orcid.org/0000-0002-5222-903X
; Università di Perugia, Dipartimento di Ingegneria, Perugia, Italy
Abstract
The present study is focused on analyzing the change of colors of anodized titanium and effects of applied electrolytic voltages on chromatics. The titanium specimens were anodize in 20 g/L citric acid and 20 g/L baking soda electrolyte by use of different voltages. The colors of anodize titanium were measured with a spectrophotometer and then evaluated in the CIELAB color space. It is found that different volt produces different colors. Anodizing in the range of 15 V to 150 V produces respectively a wide spectrum of color ranging from brown to fuchsia. It can be concluded that the colors of the anodize titanium are dependent upon the applied voltages.
Keywords
titanium alloys; anodization; color; oxide; solution
Hrčak ID:
189377
URI
Publication date:
1.1.2018.
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