Open AccessFormation and characterisation of nanoporous TiO 2 layers on microroughened titanium surfaces by electrochemical anodisation
Author(s) -
Dikici Tuncay,
Guzelaydin Abdurrahman Halis,
Toparli Mustafa
Publication year - 2014
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2013.0719
Subject(s) - nanoporous , anodizing , titanium , materials science , contact angle , wetting , x ray photoelectron spectroscopy , scanning electron microscope , surface roughness , surface finish , chemical engineering , etching (microfabrication) , electrochemistry , nanotechnology , composite material , metallurgy , electrode , chemistry , layer (electronics) , aluminium , engineering
Nanoporous titanium dioxide (TiO 2 ) layers were successfully formed by an electrochemical anodisation method on microroughened titanium (Ti) surfaces in uoride containing aqueous electrolyte. Microroughened Ti surfaces were produced by sandblasting with Al 2 O 3 particles of 50 μm in diameter and acid‐etching in a blend of HCl/H 2 SO 4 solution. The surface morphology, topography and chemical composition of the specimens were analysed by scanning electron microscopy, atomic force microscopy and X‐ray photoelectron spectroscopy. The surface roughness and the wettability of treated Ti surfaces were measured using profilometry and a contact angle measurement system, respectively. With anodising of sandblasted‐/acid etched surfaces, micrometre‐ and nanometre‐scale textures on titanium specimens were created. Results showed that these developed nanoporous‐microroughened surfaces exhibited lower contact angle values than the other treated Ti surfaces. The sandblasted/acid‐etched/anodised Ti specimen had a surface morphology with distinctively formed hills and valleys and higher surface roughness than the other anodised specimens. This study indicated that nanoporous TiO 2 structures fabricated on microroughened Ti can be an effective way to modify the titanium surfaces for the future development of implant applications.