High-temperature oxidation of pure titanium in CO2 and Ar-10%CO2 atmospheres |
| |
| Authors: | Kiyoshi Kusabiraki Noriaki Kuroda Isao Motohira Takayuki Ooka |
| |
| Affiliation: | (1) Faculty of Engineering, Toyama University, 930 Gofuku, Toyama, Japan;(2) Now UCOM Co., Ltd., Toyama University, 939-02 Akai, Ooshimamachi, Japan;(3) Now Tateyama Aluminum Industry Co., Ltd., Toyama University, 933 Hayakawa, Takaoka, Japan;(4) Formerly Faculty of Engineering, Toyama University, 930 Gofuku, Toyama, Japan |
| |
| Abstract: | The oxidation behavior of pure titanium has been investigated in the temperature range of 1000 K to 1300 K in CO2 or Ar-10%CO2. Optical microscopy, electron probe microanalyses, and X-ray measurements on the oxide scales formed during oxidation indicate that their structures are nearly independent of temperature and the corrosion atmosphere. The scales consisted of two layers, an external one and an internal one, having a rutile (TiO2) structure. The parabolic rate law was confirmed for growth of the external scale and the permeation depth of oxygen in titanium with apparent activation energies of 266 and 226 kJ/mol, respectively. The rate-determining diffusion species in the oxidation processes are discussed. |
| |
| Keywords: | oxidation titanium rutile scale high temperature kinetics |
| 本文献已被 SpringerLink 等数据库收录！ |
|
