CORROSION INHIBITION BY ORGANIC AMINES
The corrosion of pure iron in 1N HC1 is discussed in terms of the theory of mxed potentials and the theory is applied to inhibition by organic compounds. Corrosion rates with and without inhibition by aniline, several aniline derivatives, and alkylamines were determned by cathodic polarization measurements as well as by colorimetric analysis of the solution. It is shown that all compounds show a maximum inhibitor efficiency at a concentration of approxdmately 0.1 mole/1, that with one exception all are cathodic as well as anodic inhibitors, and that in most cases they are predominantly anodic inhibitors. An interpretation of the data on cathodic inhibition is suggested on the basis of the assumption of a uniform metal surface and uniform adsorption. The interpretation of anodic inhibition is found to be difficult due to a lack of satisfactory experimental data. (auth)
- Research Organization:
- Univ. of Texas, Austin
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-12-009155
- OSTI ID:
- 4329670
- Journal Information:
- Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol., Journal Name: Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol. Vol. Vol: 105; ISSN JESOA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Inhibition effects of amines and thiols on iron corrosion in anhydrous methanol solution containing FeCl{sub 3}
Inhibition of steel corrosion by thiourea derivatives