Corrosion inhibition of pure aluminium and AA2014-T6 alloy by strontium chromate at low concentration.
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| Title: | Corrosion inhibition of pure aluminium and AA2014-T6 alloy by strontium chromate at low concentration. |
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| Authors: | Liu, Yanwen1, Feng, Zuwei1, Zhou, Xiaorong1, Thompson, George E.1, Skeldon, Peter1, Lyon, Stuart B.1, Gibbon, Simon R.2, Graham, Derek2 |
| Source: | Surface & Interface Analysis: SIA. Aug2016, Vol. 48 Issue 8, p804-808. 5p. |
| Subjects: | Aluminum, Aluminum alloys, Corrosion & anti-corrosives, Leaching, Surface coatings, Chromates, Cathodic protection |
| Abstract: | The influence of a low concentration of strontium chromate on the corrosion inhibition of superpure aluminium and AA2014-T6 aluminium alloy in 0.6 M chloride solution has been investigated to simulate the leaching process of inhibitors from coatings. The potential-time and polarisation behaviour show influences on both the anodic and cathodic kinetics on the superpure aluminium surface. However, predominant cathodic inhibition was observed for the AA2014-T6 aluminium alloy. It was evident that chromium species were reduced at cathodic second phase particles, forming a thin passive film at the cathodic sites, which blocks the oxygen reduction reaction and, consequently, provides effective corrosion inhibition. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The influence of a low concentration of strontium chromate on the corrosion inhibition of superpure aluminium and AA2014-T6 aluminium alloy in 0.6 M chloride solution has been investigated to simulate the leaching process of inhibitors from coatings. The potential-time and polarisation behaviour show influences on both the anodic and cathodic kinetics on the superpure aluminium surface. However, predominant cathodic inhibition was observed for the AA2014-T6 aluminium alloy. It was evident that chromium species were reduced at cathodic second phase particles, forming a thin passive film at the cathodic sites, which blocks the oxygen reduction reaction and, consequently, provides effective corrosion inhibition. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 01422421 |
| DOI: | 10.1002/sia.5845 |
