Encapsulation of NaVO₃ as Corrosion Inhibitor into Microparticles and its Active Corrosion Protection for AA2024 Based Upon Inhibitor Control Release Available to Purchase

The present work provides a one-step method of encapsulating a corrosion inhibitor, NaVO₃, relevant to protection of AA2024-T3, into hollow microparticles. By dispersing these microparticles into a PVB coating, the encapsulated NaVO₃ may be continuously released into the electrolyte and heal the corroded sites spontaneously. The improvement of corrosion inhibition by NaVO₃ microencapsulation described herein was validated by electrochemical methods and salt spray/immersion test.