Self-Healing Coatings for Corrosion Protection of Steel

摘要: Self-healing coatings belong to a new generation of smart for corrosion control, which have both passive characteristics (from matrix material) and active behavior towards the local environment (through incorporated or surface-mounted compounds acting as inhibitors). The provide rapid release repairing material (e.g., inhibitor) after changes in coating integrity by mechanical/chemical damage pH occurring near metallic surface. Within all classes materials, one with largest self-repair potential belongs polymers since they display more useful properties than any other material. However, besides these inorganic (including mainly silica, titania, zirconia, etc.), organic, hybrid layers been successfully used matrices self-repairing coatings. On hand, self-healing agents embedded different varying from natural (tung oil, spar varnish, camphor, linseed etc.) synthetic ones (isodecyl diphenyl phosphate, 2-mercaptobenzothiazole, alkyl ammonium salts, etc.). In this context, recent advances preparation characterization on steel will be reviewed. main techniques obtaining challenges future research also briefly discussed.