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The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy
Author(s) -
Hu J. Y.,
Song X. Q.,
Zhang Z.,
Zeng D. Z.,
Shi T. H.,
Gao J. F.
Publication year - 2015
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.201307414
Subject(s) - acetophenone , magnesium alloy , alloy , magnesium , corrosion , materials science , scanning electron microscope , fourier transform infrared spectroscopy , nuclear chemistry , electrochemistry , chelation , inorganic chemistry , metallurgy , chemistry , chemical engineering , organic chemistry , composite material , electrode , engineering , catalysis
The corrosion inhibition behaviors of 2′‐hydroxy‐acetophenone for AZ91D magnesium alloy in ASTM D1384‐87 corrosive water (model water) were investigated using weight loss and electrochemical measurements. The surface morphologies and composition of films formed on magnesium alloy in solutions with and without 2′‐hydroxy‐acetophenone were examined by scanning electron microscope and Fourier transform infrared spectrum. The results show that inhibition efficiency first increases and then decreases with the increasing 2′‐hydroxy‐acetophenone concentration, its maximum value is at 50 ppm. It is considered that 2′‐hydroxy‐acetophenone anions can chelate with the Mg 2+ and form a 2′‐hydroxy‐acetophenone–Mg complex on the magnesium alloy surface, hindering the corrosion development of magnesium alloy.