The variation of the open circuit potential (OCP) of aluminium with time (60–200 h) of immersion in 1M NaCl solution has been studied. The effect of aluminium purity and surface treatment, oxygen content and pH of the solution, and inhibitor additions were investigated. The two mixed potentials generally observed were about −0·8 and about −1·1 V(SCE). The effects of mechanical agitation on the OCP are discussed.
Get full access to this article
View all access options for this article.
References
1.
GrooverR. E., LennoxJ. J., and PETERSONM.: Mater. Prot., Nov.1969, 25.
2.
PetersonM. H. and LennoxJ. J.: Mater. Perform., 1977, 16, 16.
3.
NisanciogluK. and HoltanH.: Werkst. Korros., 1979, 30, 105.
4.
NisanciogluK. and HoltanH.: Corros. Sci., 1978, 18, 1011.
5.
ForoulisZ. A. and ThubrikarM. J.: J. Electrochem. Soc., 1976, 123, 841.
6.
RichardsonJ. A. and WoodG. C.: COrrOS. SCi., 1970, 10, 313.
7.
KaecheH.: Z. Phys. Chem., 1962, 34, 84.
8.
NisanciogluK. and HoltanH.: Proc. 8th Scandinavian Corrosion Cong., Helsinki, Vol. 1, 90; 1978, Helsinki, Finnish Corrosion Centre.
SherifK. P.: PhD thesis, Indian Institute of Technology, Madras, 1986.
11.
DebriG. A. and ReadI. I. J.: Corrosion, 1971, 27, 483.
12.
SherifK. P. and NarayanR.: Proc. Symp. on ‘Advances in corrosion and corrosion control’, Karaikudi, 1982, Central Electrochemical Research Institute, 33–44.
13.
NarayanR. and SherifK. P.: Indian J. TechnoL, 1986, 24, 515.
