Anticorrosive properties of the SrO–ZnO–B₂O₃–P₂O₅ system pigments in coating compositions

Abstract

Four pigments derived from the SrO–ZnO–B₂O₃–P₂O₅ system were tested in a solvent coating system based on a modified alkyd resin and water‐borne system based on a styrene–acrylate dispersion. The pigments pastes were applied on activated steel panels and after conditioning standard corrosion tests were performed comprising the determination of resistance to humid atmospheres containing SO₂ and also the resistance to a neutral salt fog. Test results were compared with those performed on the coatings prepared with standard anticorrosion pigments of Zn₃(PO₄)₂.2H₂O, Ca(BO₂)₂, Zn(BO₂)₂ a Ba(BO₂)₂. Some tested pigments revealed at least comparable corrosion‐inhibition properties with standard pigments. Coatings based on alkyd resins gave better results than those prepared form water‐borne system.

Citation

Mošner, P., Kalendová, A., Koudelka, L. and Kalenda, P. (2002), "Anticorrosive properties of the SrO–ZnO–B₂O₃–P₂O₅ system pigments in coating compositions", Pigment & Resin Technology, Vol. 31 No. 1, pp. 6-16. https://doi.org/10.1108/03699420210412548