title: Dimensional changes and phase transformation of TiO2 nanotubes heat-treated under oxygen-containing atmosphere.
abstract: The purpose of this study was to investigate the dimensional changes and phase transition of nanotubular titanium oxide arrays after heat treatment under an oxygen-containing atmosphere. The thermodynamic background for the oxidation of titanium to titanium oxide was theoretically investigated as a function of the oxygen partial pressure. The anodized titanium nanotubes had lengths between 400 and 500 nm, thicknesses of 11 nm and an amorphous structure. The specimens heat-treated at higher oxygen partial pressures preferentially had rutile phase rather than anatase phase. The thickness of the TiO2 nanotubes was increased at a lower oxygen partial pressure.
authors: Department of Materials Science and Engineering, Chonnam National University, Research Institute for Functional Surface Engineering, Gwangju 500-757, Korea.
authors: Kwangmin
authors: K
authors: Lee
authors: Dongryoul
authors: D
authors: Min
authors: Sehoon
authors: S
authors: Jeong
authors: Kwi-Dug
authors: KD
authors: Yun
authors: Hyunpil
authors: H
authors: Lim
authors: Sangwon
authors: S
authors: Park