Sodium dodeca-molybdophosphate is an extremely efficient inhibitor for abraded mild steel in neutral aqueous solution and has a high tolerance towards the presence of chloride.
Many non-ferrous metals and alloys can be protected at some concentration, some relatively high, some relatively low. At a concentration of ∼0·02 %, all metals and alloys tested singly were either protected (passivated) or formed protective films.
Of the polymetallic systems tested, most could be fairly efficiently protected at some concentration, the excepttons bemg copper/brass/aluminium alloy which was attacked at all concentrations and galvanised steel which was possibly protected in 2·3% solution only.
Get full access to this article
View all access options for this article.
References
1.
LizlovsE. A., J. electrochem. Soc., 1967, 114, 1015
2.
BrasherD. M., & MercerA. D., Br. Corros. J., 1968, 3, 120
3.
See ‘Teddington Mains Water’ in Butler, G., & Ison, H. C. K., ‘Corrosion and its Prevention in Waters’, 1966, p. 21 (London: Leonard-Hill)
4.
See ‘Sea water, average figure’;ibid., p. 21
5.
MercerA. D., & JenkinsI. R., Br. Corros. J., 1968, 3, 130
6.
MercerA. D., JenkinsI. R., & Rhoades-Brown, J. E., Br. Corros. J., 1968, 3, 136
7.
Chemistry Research, 1957’, 1958, p. 14 (London: H.M.S.O.)
8.
CartledgeG. H., J. Am. chem. Soc., 1955, 77, 2658
9.
SeeButlerG., & IsonH. C. K., ‘Corrosion and its Prevention in Waters’, 1966, p. 166 (London: Leonard-Hill)
10.
BrasherD. M., BeynonJ. G., MercerA. D., & Rhoades-Brown, J. E., Proc. 2nd Eur. Symp. Corrosion Inhibitors, Ferrara, 1965, 1966, p. 559 (Univ. of Ferrara)
11.
GroverT. K., MukerjiN. K., & SanyalB., J. Scient. ind. Res., 1961, 20D, 445
12.
WormwellF., & MercerA.D., J. appl. Chem., Land., 1952, 2, 150
13.
WormwellF., & MercerA D.., ibid., 1953, 3, 22
14.
WormwellF., MercerA. D., & IsonH. C. K., ibid., 1953, 3, 133
15.
MercerA. D., & WormwellF., ibid., 1959, 9, 577
16.
MercerA. D., & BrasherD. M., ibid., 1959, 9, 589 Sax, N. I., ‘Dangerous Properties of Industrial Materials’, 1957, p. 913 (New York: Reinhold Publishing Corporation; London: Chapman & Hall, Ltd.)
17.
SaxN. I., ‘Dangerous Properties of Industrial Materials’, 1957, p. 913 (New York: Reinhold Publishing Corporation; London: Chapman & Hall, Ltd.)
18.
BrowningE., ‘Toxicity of Industrial Metals’, 1961, p. 215 (London: Butterworths)
19.
FairhallL. T., DunnR. C., SharplessN. E., & PritchardE. A., ‘Toxicity of Molybdenum’, U.S. publ. Hlth Serv. publ. Hlth Bull., 1945, p. 293
