Numerical modeling of hydrogen desorption profile in thermal desorption analysis

Ebihara, Kenichi   ; Suzudo, Tomoaki   ; Kaburaki, Hideo; Takai, Kenichi*

We tried to reproduce numerically the hydrogen desorption profile of pure iron and eutectoid steel which is obtained in the thermal desorption analysis using the McNabb-Foster equation without the diffusion term and the Oriani's theory. The peak and height of the desorption profile for both metals were nearly reproduced. We discuss the density of defects which is predicted by our model on the basis of the profile obtained as the result.