Layer-by-layer assembled nanocontainers for self-healing corrosion protection

abstract

The self-healing anticorrosion effect of layer-by-layer (LbL) assembled nano-reservoirs (polyelectrolyte-coated nanoparticles) embedded in a hybrid coating deposited onto an Al alloy is investigated (see figure). The corrosion inhibitor, benzotriazole, is entrapped in the polyelectrolyte at the LbL assembly step; its release is initiated by local pH changes near the corrosion-damaged zones in the alloy. The nanoreservoirs increase long-term corrosion protection of the substrate and provide effective inhibitor storage and its prolonged release on demand.

keywords

SOL-GEL COATINGS; POLYELECTROLYTE MULTILAYERS; THIN-FILMS; ALUMINUM; NANOPARTICLES; PERMEABILITY; DEPOSITION; INHIBITORS; PARTICLES; MEMBRANES

subject category

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

authors

Shchukin, DG; Zheludkevich, M; Yasakau, K; Lamaka, S; Ferreira, MGS; Mohwald, H

our authors

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