cpomaemКоррозия: защита материалов и методы исследованийTitle in englishИФХЭ РАН10.61852/2949-3412-2023-1-4-101-113cpomaem-31Research ArticleСтатьиЛазерная обработка поверхности алюминиевого сплава АД31 и его супергидрофобизация растворами органических кислотThe laser treatment of aluminum alloy AD31 and its superhydrophobization with solutions of organic acidsСемилетовА. М.SemiletovA. M.

119071

Ленинский проспект, 31, корп. 4

Москва

119071

Leninsky av. 31/4

Moscow

semal1990@mail.ruИнститут физической химии и электрохимии им. А.Н. Фрумкина РАНРоссияA.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of SciencesRussian Federation20230501202404101113Copyright © Семилетов А.М., 20242024Семилетов А.М.Semiletov A.M.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.cpmrm.ru/jour/article/view/31

   В результате лазерной обработки на поверхности алюминиевого сплава АД31формируется равномерно неоднородная шероховатость. Дальнейшая обработка сплава этанольными растворами октадецилфосфоновой (ОДФК) и стеариновой (СК) кислотами приводит к его супергидрофобизации. Результаты кинетики деградации супергидрофобных покрытий в воде и условиях нейтрального солевого тумана свидетельствуют о высокой стабильности пленок ОДФК, полученных на лазеротекстурированной поверхности с высотой неровностей 9,82 мкм. Увеличить устойчивость пленок СК возможно при их послойном формировании с винилтриметоксисиланом. Защитная способность покрытий оценена поляризационными измерениями и коррозионными испытаниями.

   A uniformly inhomogeneous roughness is formed on the surface of the AD31 aluminum alloy after a laser treatment. Further treatment of the alloy with ethanol solutions of octadecylphosphonic (ODPA) and stearic (SA) acids leads to superhydrophobization of the surface. The results of the kinetics of degradation of superhydrophobic (SHP) state in water and a neutral salt spray chamber indicate the high stability of ODPA films. The stability of SA films can be increased by a layer-by-layer forming with vinyltrimethoxysilane. The protective ability of the SHP coatings was estimated by polarization measurements and corrosion tests.

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The authors declare that there are no conflicts of interest present.