| Title |
Hydrogen Diffusion Studies in Beta Ti - Fe Alloy System |
| Authors |
주웅용(Yung Yong Ju); 이재영(Jai Young Lee); 김종희(Chong Hee Kim) |
| Abstract |
The effect of iron (1-6%) addition in titanium on hydrogen diffusion was studied in the temperature range of 890-1020℃ at 200 torr hydrogen pressure. Diffusion coefficient of hydrogen and activation energy for diffusion was determined from the increment of weight during the reaction by thermogravimetric method. According to the relationship between weight gain and reaction time, hydrogen diffusion is the rate controlling step in the reaction with Ti-Fe alloy. The result also indicated that added iron alloying element has almost linearly increased the activation energy for hydrogen diffusion in Ti-Fe system. Temperature dependence of hydrogen diffusion coefficient in Ti-6% Fe alloy is as follows: D(㎠/sec)=4.238×10^(-2) exp(17714±988/RT) |