abstract
In the current paper the corrosion inhibition synergy between Ce3+ loaded NaY-zeolite (NaY-Ce) and 2-Mercaptobenzothiazole (MBT) loaded Zn-Al layered double hydroxide (LDH-MBT) containers is presented. Solutions and water-borne epoxy coatings containing different ratios of the two loaded carriers were prepared and their protection of AA2024-T3 and damaged coatings characterized using global and local electrochemical techniques and other complementary tools. The coatings containing container-combinations showed exceptional corrosion protection over a broad range of NaY-Ce:LDH-MBT weight ratios, with 90:10 being the optimal. The current work landmarks the need for synergetic inhibiting studies devoted to carrier-inhibitor systems in coatings.
keywords
RARE-EARTH COMPOUNDS; FILIFORM CORROSION; NACL SOLUTION; INHIBITION; COATINGS; ZEOLITES; PIGMENTS; CE(III); GREEN; FILMS
subject category
Materials Science; Metallurgy & Metallurgical Engineering
authors
Zadeh, MA; Tedim, J; Zheludkevich, M; van der Zwaag, S; Garcia, SJ
our authors
João Tedim
Associate Professor
Mikhail Zheludkevich
Invited Principal Researcheracknowledgements
MA, SvZ and SJG would like to acknowledge the Dutch National IOP program on self-healing materials for grant IOP-SHM-1028. JT and MZ would like to acknowledge the IF/00347/2013 grant from FCT. Additionally the authors would like to thank A. Bastos for his help and input during the SVET measurements.