. Official proceedings . l J, which appears tobe as good as the other, might have been selected for use. Someof these same data, jilotted in a difl^erent manner, are shown inFigure 2. There was no direct relationshi]) between the amount ofrainfall and the amount of corrosion, but there seemed to be asomewhat definite relationship between the amount of corrosionand the degree of pollution of the industrial atmosphere. It may be of some interest to know that more than 30,00(1samples have been tested in the last six years. This numbercomprises about sr)0 different steels and ])rotective coatings
. Official proceedings . l J, which appears tobe as good as the other, might have been selected for use. Someof these same data, jilotted in a difl^erent manner, are shown inFigure 2. There was no direct relationshi]) between the amount ofrainfall and the amount of corrosion, but there seemed to be asomewhat definite relationship between the amount of corrosionand the degree of pollution of the industrial atmosphere. It may be of some interest to know that more than 30,00(1samples have been tested in the last six years. This numbercomprises about sr)0 different steels and ])rotective coatings inabout 1-15 different laboratory and tield tests. The amount of corrosion is usually determined by the lossof weight of sam])les exi^osed for a gi\cn time, the final weight 24 being obtained after the rusted samples are cleaned electrolyti-cally. In some cases they are graded according to the timerequired for corrosion to perforate sheets but visual observationof rusted materials mav result in misleading conclusions. 25. SEPT. NOV. JAN. MAR. MAY JULY TO TO TO TO TO TO SEPT. NOV. JAN. MAR. f^AY JULY ONE-YEAR EXPOSURE FIGURE 2.—There is some indication that the amount of corrosion of steel in anindustrial atmosphere is some function of the amount of atmospheric definite relationship appears to exist between the amount of corrosion and the amount of rainfall. The corrosion work of the American Sheet and Tin PlateCompany has, as a background, the successful development ofcopper bearing steel. The effect of co])per in iron had beenstudied by Stodart and Faraday(-) as early as 18-^-3, but it w^asnot until 191:3 that D. M. (••), following the work of Bur- 25 gess and Aston(*) in 1910, pointed out the influence of smallamounts of copper on the corrosion resistance of steel- Subse-quent intensive investigational work by Buck was responsil)le forrapid ])rogress in the manufacture and successful ap])lications ofcopper bearing steel, or more sim])ly, copper steel.
Size: 1320px × 1893px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorrailwayc, bookcentury1900, bookdecade1900, bookyear1901
