Structural stabilization and long-term protection in 2D-based hybrid anticorrosion coatings: a review
Yuanhang Pang, Meng Liu, Fengting Cao, Tiegang Wang, Qixiang Fan, Yanmei LiuPurpose
This study aims to review methods for stabilizing sheet architectures in two-dimensional (2D)-based hybrid anticorrosion coatings and analyze their effects on the retention of barrier performance and long-term protection.
Design/methodology/approach
Starting from corrosive-species transport and structural failure, the review considers effective aspect ratio, sheet orientation, filler loading, internal component ratio, interfacial continuity and electrical percolation. It compares in situ growth and deposition, surface engineering, self-assembly and interfacial assembly and field-assisted alignment and evaluates durability using coating morphology, permeability, water uptake, adhesion, electrochemical impedance spectroscopy (EIS) and evidence from scratched coatings.
Findings
The barrier advantage of 2D sheets can be realized only when their effective architecture is retained during dispersion, curing and service. Auxiliary units can suppress restacking, restrict relative motion, improve filler-resin interfaces and regulate electrical contacts. Excessive loading, open pores, hydrophilic surfaces and inadequate resin infiltration may, however, introduce new transport pathways. Durable protection therefore requires a formulation-specific balance among sheet morphology and orientation, component ratio, interfacial state and electrical percolation. In active systems, performance further depends on trigger timing, the effective concentration at defects and the post-release integrity of carriers and interfaces.
Originality/value
Using structural stability as the central theme, this review connects structural destabilization, stabilization-oriented fabrication and protection in service and derives structure-performance relationships and design implications from representative quantitative evidence.