Hydrogen Absorption and Desorption Behavior With A Boronized Wall

Abstract

A systematic study on hydrogen behavior with boronized walls has been carried out.. Hydrogen in boron films can be completely removed below 400°C in a pure boron film, This is not significantly changed with a boron film fully contaminated by oxygen. Strong absorption of hydrogen by a hydrogen-depleted boron film is seen just after start of hydrogen/glow discharge. Absorption during the discharge is not completely saturated with time, even after 10 hours. Behavior of hydrogen pressure just after the termination of the glow discharge suggests so called “dynamic retention”. It is comparable to saturated retention. The dynamic behavior can be reproduced with a simple model, in which trapping, detrapping, recombination processes are included.