Adhesion and Long-Term Barrier Restoration of Intrinsic Self-Healing Hybrid Sol-Gel Coatings

ACS Applied Materials & Interfaces
Mina Abdolah ZadehSantiago J Garcia

Abstract

Self-healing polymeric coatings aiming at smart and on-demand protection of metallic substrates have lately attracted considerable attention. In the present paper, the potential application of a dual network hybrid sol-gel polymer containing reversible tetrasulfide groups as a protective coating for the AA2024-T3 substrate is presented. Depending on the constituent ratio, the developed polymer exhibited a hydrophobic surface, high adhesion strength, and an effective long-term corrosion protection in 0.5 M NaCl solution. Upon thermal treatment, the healable hybrid sol-gel coating demonstrated full restoration of the barrier properties as well as recovery of the coating adhesion and surface properties (e.g., hydrophobicity and surface topology) necessary for lifetime extension of corrosion protective coatings. Excellent long-term barrier restoration of the coating was only obtained if the scratch width was less than the coating thickness.

References

Nov 11, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Peng Wang, Dale W Schaefer
Jan 22, 2011·ACS Applied Materials & Interfaces·Erika D RodriguezPatrick T Mather
Oct 23, 2012·ACS Applied Materials & Interfaces·U LafontS van der Zwaag
Dec 18, 2014·ACS Applied Materials & Interfaces·Alexander LutzHerman Terryn

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Citations

Dec 5, 2017·Journal of Colloid and Interface Science·Ruben F A O TorricoPeter Hammer
Jun 5, 2021·ACS Applied Materials & Interfaces·Katie M HerbertStuart J Rowan
Feb 6, 2020·ACS Applied Materials & Interfaces·Meng-Shian TsaiYang-Fang Chen
Sep 1, 2018·ACS Applied Materials & Interfaces·Elvis CudjoeStuart J Rowan
Jan 14, 2021·ACS Applied Materials & Interfaces·Siavash KhodakaramiNenad Miljkovic
Oct 16, 2021·Science Advances·Md Anisur RahmanTomonori Saito

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