Effects of particle sizes and shapes of zinc metal on the properties of anticorrosive coatings

The paper deals with a study of the zinc particle sizes and shape effects on the anticorrosive coating properties, As a binder the epoxyester resin is used The zinc particle size and shape effects are discussed from the mechanical coating properties, film permeabilities to water vapor and above all the pigment anticorrosion protection efficiency points of view. The connection between the spherical particle sizes and the coating anticorrosive efficiency was found. The smaller particle sizes mean better anticorrosive coating properties. The lamellar zinc particles exhibit the highest anticorrosion efficiency at a concentration around 20 vol.%. (C) 2003 Elsevier Science B.V. All fights reserved.