The inhibition of iron corrosion from damaged lacquered tinplate in oxygen free pH 4 citrate buffer solution by the addition of stannous tin has been demonstrated using an accelerated simulated can corrosion test. The inhibition was total for tinplate of nominal coating mass 2·8 g m−2 for additions of 5–15 ppm of stannous ion, but was only partial for tinplate of nominal coating masses 1·4, 1·0, and 0·5 g m− up to a 60 ppm addition. The extent of undermining of the lacquer from around a standard scratch was shown to be dependent on the tin coating mass remaining on the tinplate, rather than the presence of stannous ions in solution.
Get full access to this article
View all access options for this article.
References
1.
HoarT. P. and HavenhandD.: J. Iron Steel Inst., 1936, 133, 239.
2.
KoehlerE. T.: J. Electrochem. Soc., 1956, 103, 486.
3.
KammG. G. and WilleyA. R.: Corrosion, 1961, 17, 77.
‘ITRI annual report 191981’, International Tin Research Institute, Greenford, Middlesex, 1981, 11.
7.
WarwickM. E. and HampshireW. B.: in ‘Laboratory corrosion tests and standards’, STP 866, (ed.HaynesG. and BaboianR.), 48–64; 1985, Philadelphia, Pa, American Society for Testing and Materials.
8.
‘ITRI annual report 191983’, International Tin Research Institute, Greenford, Middlesex, 1983, 12.
9.
SherlockJ. C.: Proc. 1st Int. Tinplate Conf., London, 1976, International Tin Research Institute, 322.
10.
KoehlerE. T.: Werkst. Korros., 1970, 21, 554.
11.
ClarkeM. and BrittonS. C.: Corros. Sci., 1963, 3, 207.
