TITLE

Hydrogenation of passivated aluminum with hydrogen fluid

AUTHOR(S)
Saitoh, H.; Machida, A.; Katayama, Y.; Aoki, K.
PUB. DATE
April 2009
SOURCE
Applied Physics Letters;4/13/2009, Vol. 94 Issue 15, p151915
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Hydrogenation conditions of passivated aluminum were examined in a pressure and temperature range of 6–10 GPa and 300–800 °C, respectively. The relationship between the hydrogenation reaction yields and holding time was analyzed by Johnson–Mehl–Avrami equation. An Avrami exponent n of 0.3 indicated that the reaction decreased with time due to the low diffusivity of hydrogen in AlH3. The oxide layer on passivated aluminum seemed to be partly removed or modified by pressure-temperature treatment above 6 GPa and 600 °C in hydrogen fluid. The hydrogenation pressure of 9 GPa for the passivated aluminum was reduced to 6 GPa.
ACCESSION #
37831777

 

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