Iron corrosion; anti-fouling and anti-corrosive paints . which, in addition to possessing toxicproperties, are quick drying, combine with a smooth surface,and do not peel off. To prevent peeling the mass must beapplied to the object in layers, each of which is allowedto dry uniformly, in order to avoid inequality due todissimilar vehicles. Copper salts, especially sulphates oroxides, form new combinations with the surrounding water,and are gradually eaten away, , peel off; and there are 216 mON-CORROSION AND ANTI-COBBOSIVE PAINTS. other materials which also possess dehiscent
Iron corrosion; anti-fouling and anti-corrosive paints . which, in addition to possessing toxicproperties, are quick drying, combine with a smooth surface,and do not peel off. To prevent peeling the mass must beapplied to the object in layers, each of which is allowedto dry uniformly, in order to avoid inequality due todissimilar vehicles. Copper salts, especially sulphates oroxides, form new combinations with the surrounding water,and are gradually eaten away, , peel off; and there are 216 mON-CORROSION AND ANTI-COBBOSIVE PAINTS. other materials which also possess dehiscent , himself manufacturer of a widely used composition,lays stress on the suitability of the preparation to the portionof tlie ocean the vessel has to traverse, since the same formulais not adapted to serve in all waters. The harder the paint the longer is it likely to last, andpaints endowed with this property are particularly suitablefor the Atlantic passage, whilst the more dehiscent (peehng)enamels are better adapted for the impure waters of the. F:g. go (magnified).—Ncm-peeliDg anti-fouling composition after threemontlis immersion in water. Indian Seas. In the former case a much smaller quantityof poisonous mateiial is required, and renewal is lessfrequently necessary than in the latter waters. On the question of paints for non vessels, P. Schwarzsays : The object of the paint is to preserve the shipsbottom from corrosion or incrustation, and to colour thevessel above the water line. In the case of warships thiscolour should be inconspicuous, and for vessels in tropucalwaters should be sucli as will exert a favourable influence on lEON-CORROSION AND ANTI-CORBOSIVE PAINTS. 217 the internal temperature of the ship. In steel or iron vesselsthe principal point is preservation from rust, oxygen beingpresent in large proportion in the air, the water, and partlyalso in the carbon dioxide of the bilge water. Moreover, the scale (proto-peroxide of iron) produced inrolling the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
