Iron corrosion; anti-fouling and anti-corrosive paints . FiG. 2 (magnified).—Rust on rolled sheet iron, scoured with pumice ; producedby falling drops of water constantly evaporated. capable of preventing the destruction of the rail in question,and therefore cannot be regarded as an efficient protectivecoating for this metal. As Professor L. von Tetmayr has adequately shown, theinfluence of smoke fumes on iron has not been sufhcientlyregarded up to the present time, for we can see every dayarticles or objects that have, from the outset, been exposedto a strong acid corrosion without being prot
Iron corrosion; anti-fouling and anti-corrosive paints . FiG. 2 (magnified).—Rust on rolled sheet iron, scoured with pumice ; producedby falling drops of water constantly evaporated. capable of preventing the destruction of the rail in question,and therefore cannot be regarded as an efficient protectivecoating for this metal. As Professor L. von Tetmayr has adequately shown, theinfluence of smoke fumes on iron has not been sufhcientlyregarded up to the present time, for we can see every dayarticles or objects that have, from the outset, been exposedto a strong acid corrosion without being protected frompremature destruction by any smoke shield or the application 20 mON-COEROSION AND ANTI-CORROSIVE PAINTS. of some suitable paint. Through a better appreciation ofthe state of affairs the system of construction employed inunfavourable cases in Bavaria of late is such that the iron-work is almost entirely enclosed in cement concrete, which. Pig. 3 (natural size),—Rust produced on rolled iron plate in twelve hours bymoistening with water and leaving it to dry. alone should afford an extremely durable, acid-resistingcoating. How great is the damage done to ironwork bysulphurous smoke gases is shown by numerous examples, afew of which are cited below :— In June, 1893, there was found in a corner of the IRON-CORBOSION AND ANTI-CORROSIVE PAINTS. 21 abutment of the Swiss National Eailway bridge where thishne crosses the busy Aran track of the Swiss North-eastEailway, a steel chisel which had evidently been left thereby one of the fitters sixteen years before. This tool wasexamined by me (von Tetmayr) and found to be completelyrusted away. With the exception of the under side on whichit had lain and which was rusted only to the depth of about-jV inch {11 mm.), the chisel was covered on all sides witha layer of | inch (6 mm.) and more of rust. Such an exten-sive corrosion of steel in the air could only have been broughtabout
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
