Effect of pressurized steam on AA1050 aluminium

Research output: Contribution to journalJournal article – Annual report year: 2012Researchpeer-review

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Purpose - The purpose of this paper is to understand the effect of pressurized steam on surface changes, structures of intermetallic particles and corrosion behavior of AA1050 aluminium. Design/methodology/approach - Industrially pure aluminium (AA1050, 99.5 per cent) surfaces were exposed to pressurized steam produced from a commercial pressure cooker at the maximum temperature of 116oC for 10?min. Surface morphology was observed using SEM-EDX and FIB-SEM. Phase identification and compositional depth profiling were investigated using XRD and GDOES, respectively. Potentiodynamic polarization measurements were used to study corrosion behavior. Findings - A 590?nm boehmite oxide layer was generated on AA1050 associated with partially dissolved and/or fallen off Fe-containing intermetallic particles after exposure to pressurized steam. A significant reduction (25 times) in anodic and cathodic reactivities was observed due to the formation of the compact oxide layer. Originality/value - This paper reveals a detailed investigation of how pressurized steam can affect the corrosion behaviour of AA1050 aluminium and the structure of Fe-containing intermetallic particles.
Original languageEnglish
JournalAnti-Corrosion Methods and Materials
Volume59
Issue number3
Pages (from-to)103-109
ISSN0003-5599
DOIs
Publication statusPublished - 2012
CitationsWeb of Science® Times Cited: No match on DOI
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