Journal article
Effect of pressurized steam on AA1050 aluminium
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.
Language: | English |
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Publisher: | Emerald Group Publishing Limited |
Year: | 2012 |
Pages: | 103-109 |
ISSN: | 17584221 and 00035599 |
Types: | Journal article |
DOI: | 10.1108/00035591211224645 |
ORCIDs: | Ambat, Rajan |