Application of the electrochemical noise to investigate the corrosion resistance of an epoxy zinc-rich coating loaded with lamellar aluminum and micaceous iron oxide particles

Anticorrosion efficiency of zinc-filled epoxy coatings containing conducting polymers and pigments

“…This represents active protection because the function of electrochemical cathodic protection is renewed after each instance of mechanical damage to the film [1,5]. Zinc oxide and zinc hydroxide also possess some anticorrosion properties [6]. Metal substrate protection against corrosion by the mechanism described is limited so far to the use of zinc and, to a lesser extent, magnesium [7].…”

An evaluation of the anticorrosion properties of the spinel nanopigment-filled epoxy composite coatings applied on the steel surface

“…This means that the degraded coating could not provide long term corrosion protection properties. Therefore, different kinds of anticorrosive pigments can be added to the coating matrix to improve its anticorrosion properties [5][6][7]. The corrosion protection properties of the pigments depend on the chemical nature, shape and size of the pigments.…”

Anticorrosive behavior of a zinc-rich epoxy coating containing sulfonated polyaniline in 3.5% NaCl solution

“…It produces the higher porosity of coating owing to a large amount of zinc particles and the resulting poor shielding effect of the coating. On the other hand, zinc corrosion products such as ZnO and Zn(OH) 2 are formed during cathodic protection. 18 Although it can provide some shielding protection, it leads to the rapid failure of the coating due to the decrease of the connection among the zinc particles.…”

“…Overall, organic protective coatings have three functions: barrier, sacricial and inhibitory action. [1][2][3][4][5][6][7][8] Most organic coatings can act as a barrier lm to prevent the diffusion of corrosive substances such as H 2 O and various ionic solutes to the surface of steel. Moreover, an organic coating can act as a reservoir for corrosion inhibitors or pigments which can slow down the rate of corrosion at coating defects and anodic corrosion sites.…”