Iron corrosion; anti-fouling and anti-corrosive paints . rs, and the like. In such airrusting will take place, even without the access of water—whether as condensed moisture or as rain—at a muchquicker rate than in a purer atmosphere, and its progress isstill further accelerated by moisture, owing to the precipita-tion by the latter, on the metal, of all the injurious vapoursand gases floating about in the air. It is a well-known fact that ironwork in the vicinity of 3 34 IBON-COEEOSION AND ANTI-COEEOSIVE PAINTS. factories employing coal as fuel suiifers greatly from rust,and that in the neigh
Iron corrosion; anti-fouling and anti-corrosive paints . rs, and the like. In such airrusting will take place, even without the access of water—whether as condensed moisture or as rain—at a muchquicker rate than in a purer atmosphere, and its progress isstill further accelerated by moisture, owing to the precipita-tion by the latter, on the metal, of all the injurious vapoursand gases floating about in the air. It is a well-known fact that ironwork in the vicinity of 3 34 IBON-COEEOSION AND ANTI-COEEOSIVE PAINTS. factories employing coal as fuel suiifers greatly from rust,and that in the neighbourhood of chemical works, wheregaseous acids are discharged into the air, all articles madeof cast, wrought, or rolled iron are so rapidly attacked byrust that in a very short time thin sheet iron is completelyeaten away. This is easy to understand, for if even a weakacid be allowed to react continuously on thin sheet iron, thelatter will, in a comparatively short time, become brittlethrough the formation of rust, and finally corroded into Fig. 18 (magnified).—Rust produced on rolled iron plate by tlie applicationof a solution of common salt left to dry on. The condensation of moisture on iron objects is also quitesufficient to produce rust and favour its progressive develop-ment. The author examined an iron pipe which was keptthrough the winter in a perfectly dry place, and found thatthe moisture olstaining access to the room in the course ofdiurnal ventilation, floor cleaning, and respiration, sufficedto develop on the surface, before spring, a fairly uniformrough coating of rust. It is also well known that polishedarticles of steel or iron can be rusted by merely handling IRON-CORROSION AND ANTI-CORROSIVE PAINTS. 35 them once, the thin film thus produced increasing pro-gressively as the articles are more frequently used, andfinally forming a dense stratum of rust. That the action of water, acids, common salt in solution,and other rust formers does not produce
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
