Journal article
The influence of pH on the corrosion of medium strength aerospace alloy 8090, 2091 and 2014
The influence of pH on the corrosion behaviour of two aluminium-lithium-copper-magnesium-zirconium (8090 and 2091) alloys was studied and compared with a standard aircraft alloy, 2014 (Al-4.4% Cu) and 99.9% pure Al. In constant exposure and potentiodynamic polarization studies conducted in 3.5% NaCl solution having different pH values, all the alloys exhibited high corrosion rates in acidic and alkaline environments, with a minimum in less hostile environments close to neutral pH.
The pitting potentials for aluminium-lithium alloys were slightly lower than those for 2014 and pure Al. The effect of pH on the passive current density was also less for aluminium-lithium alloys.
Language: | English |
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Year: | 1992 |
Pages: | 681-690 |
ISSN: | 0010938x and 18790496 |
Types: | Journal article |
DOI: | 10.1016/0010-938X(92)90102-9 |
ORCIDs: | Ambat, Rajan |