Iron corrosion; anti-fouling and anti-corrosive paints . Fig. 38 (magnified).—Pine (liair) cracks in a ten-year-old white lead paint. in varnish, the final coat richer. The poor results obtainedwith iron oxide paints may, when bad materials are used, bevery often due to the non-observance of this rule. 86 lEON-COBROSION AND ANTI-COBEOSIVE PAINTS. Further references to the utihty of a large proportion ofoil or varnish in paint will be made in the following sectionon anti-corrosive paints . Every oil paint, no matter whether the contained pig-ment absorbs much or little oil or varnish, in time c
Iron corrosion; anti-fouling and anti-corrosive paints . Fig. 38 (magnified).—Pine (liair) cracks in a ten-year-old white lead paint. in varnish, the final coat richer. The poor results obtainedwith iron oxide paints may, when bad materials are used, bevery often due to the non-observance of this rule. 86 lEON-COBROSION AND ANTI-COBEOSIVE PAINTS. Further references to the utihty of a large proportion ofoil or varnish in paint will be made in the following sectionon anti-corrosive paints . Every oil paint, no matter whether the contained pig-ment absorbs much or little oil or varnish, in time comes todestruction. The actual period, however, at which this occursvaries, and depends on the amount and quahty of the varnishused. All paints perish at some time or other, either as a. Pig. 39 (natural size).—Blisters, formed by warmth, in a red lead paint poorin varnish, topping a richer bottom coat. The blisters have burst,collapsed, and left tlie metal bare. result of cracking, or in consequence of progressive oxidation,leaving the paint finally in the condition of a powder looselyadherent to the substructure. The cracks are at least quiteas prejudicial to the preservation of the iron as the coherentbut permeable coat of paint, since they admit moisture tothe metal and engender rust, whilst the more or less absor-bent paint also takes up and retains water, and may there-fore also give rise to the formation of rust. Hence, in order toensure the preservation of the iron, the formation of cracks IRON-COREOSION AND ANTI-CORSOSIVE PAINTS. 87 must, as far as possible, be obviated by the selection of paintof a suitable character. When, however, cracks have oncecommenced to form, a fresh coat of paint must be laid on atonce, and this also applies to cases where the pai
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcorrosionandanticorr
