Hydrogen Absorption Characteristics of Al/Pd Film

Al/Pd 박막의 수소 흡수 특성

  • Cho, Young-Sin (Dept of Science Education Kangwon National University)
  • 조영신 (강원대학교 과학교육학부)
  • Published : 2006.06.15

Abstract

Al film(135.5 nm thick) with Pd film(39.6 nm thick) on the top of it was made by thermal evaporation method. Hydrogen absorption of Al/Pd film was measured by quartz crystal microbalance(QCM) method at room temperature. The sample was activated by hydrogen absorption and desorption cycling at room temperature. Hydrogen was introduced into the film by increasing hydrogen gas pressure step by step up to 640 torr at room temperature. Hydrogen concentration reached up to 25% at $5{\sim}10$ torr. But at high pressure the concentration decreased. This strange tendency was not understood yet. Further study is needed to find out the mechanism of hydrogen absorption in Al in Al/Pd film.

Keywords

Quartz Crystal Microbalance;Film;Hydrogen absorption;desorption;Activation

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