Enhancing aluminum corrosion in water

J. Skrovan, A. Alfantazi, T. Troczynski

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

For small particles of aluminum (<60 μm), a measurable percentage of the aluminum (>5%) is observed to corrode before passivation occurs at moderate temperatures (>50 °C) in de-ionized water within 1 h. Ball-milling of the aluminum powders with aluminum oxide or water soluble salts results in a significant increase in both the rate of corrosion and the extent of corrosion before passivation. The resulting release of hydrogen gas is of commercial interest for portable hydrogen supply systems. This paper investigates the effect of temperature increase, pH shift, and change of surface area during milling, on the corrosion rate of aluminum powders in water.

Original languageBritish English
Pages (from-to)1695-1702
Number of pages8
JournalJournal of Applied Electrochemistry
Volume39
Issue number10
DOIs
StatePublished - Oct 2009

Keywords

  • Aluminum
  • Ball-milling
  • Corrosion
  • Hydrogen

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