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Protection of aluminum alloy AD31 from corrosion by adsorption layers of trialkoxysilanes and stearic acid
Author(s) -
Semiletov Aleksei M.,
Chirkunov Alexander A.,
Kuznetsov Yurii I.
Publication year - 2020
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.201911000
Subject(s) - stearic acid , dielectric spectroscopy , corrosion , materials science , adsorption , distilled water , aluminium , polarization (electrochemistry) , alloy , chemical engineering , electrochemistry , salt (chemistry) , chloride , metallurgy , inorganic chemistry , chemistry , composite material , chromatography , electrode , organic chemistry , engineering
The effectiveness of protection of technical aluminum AD31 by its hydrophobization and superhydrophobization (SHP) with ethanol solutions of trialkoxysilanes and stearic acid was evaluated. The stability of SHP coatings in distilled water and chloride solution was studied. The thickness of the formed SHP layers is determined by the ellipsometric method. Polarization measurements, electrochemical impedance spectroscopy, and corrosion tests have shown that SHP coatings have a protective ability in 3% NaCl and under the impact of salt spray.