The effect of blasting materials on the corrosion of protected steel in sea water

Abstract

Different blasting materials were used to blast‐clean a steel surface before it was painted with protective coatings. The materials tested were garnet, dolomite, marble and olivine. The coatings used were chlorinated rubber pigmented with 10 per cent red mud and a commercial primer ‐ transoprene silver primer HB 1.26. The prepared specimens were immersed in the sea, near the shore, for three months and corrosion was monitored as a function of time by weight loss measurements. Electrochemical tests were also performed on some specimens, i.e. polarization curves. The damage equations were obtained for all tested systems along with the blank specimens (without coating). The results show that the olivine‐blasted surface when protected by chlorinated rubber and pigmented by red mud protects the metal substrate more satisfactorily than the other systems. The effect of the blasting material was not as pronounced as it was under laboratory conditions.

Citation

Andronikos, G., Valiadis, P. and Vassiliou, P. (1998), "The effect of blasting materials on the corrosion of protected steel in sea water", Anti-Corrosion Methods and Materials, Vol. 45 No. 3, pp. 153-157. https://doi.org/10.1108/00035599810216821