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Mechanisms of corrosion inhibition for an aluminium‐silicon‐magnesium alloy in 0.1 N NaOH solutions at 60 °C
Author(s) -
Triki E.,
Daufin G.,
Labbé J. P.,
Pagetti J.
Publication year - 1979
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19790300407
Subject(s) - corrosion , tartrate , aluminium , alloy , magnesium , silicon , materials science , electrochemistry , dielectric spectroscopy , phase (matter) , amorphous solid , silicate , inorganic chemistry , nuclear chemistry , metallurgy , chemistry , crystallography , organic chemistry , electrode
The mechanism of corrosion inhibition has been studied for an Al‐Si‐Mg alloy in a 0.1 N NaOH medium at 60 °C with cheap, non toxic substances. The effects of Ca 2+ and tartrate ions are differentiated and the presence of an insoluble calcium alumino tartrate is evidenced. The greater stability of an amorphous alumino silicate phase is also emphasized, and with electrochemical measurements, weighing tests, X‐ray diagrams and IR spectroscopy, the importance of Al III is revealed.