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Initial Pitting Behaviour of LY12 Aluminium Alloy in Simulated Marine Atmosphere

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Abstract:

By analyzing morphology, weight gain, pitting depth, potential and AC impendence in corrosion course, initial pitting behavior of LY12 aluminum alloy in simulated marine atmosphere was studied. Results indicated initial pitting of LY12 was affected much by Cl- sedimentation and atmosphere humidity, little by temperature below 35°C. Weight gain and pitting depth increased with rising of Clsedimentation quantity, humidity and temperature. Correlation of weight gain and time fitted Model Boltzman. In initial pitting course of LY12, open circuit potential changed little and Nyquist graph had the characteristic of adsorbent resist system.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

747-752

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.747

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Online since:

July 2006

Authors:

De Sheng Han, Min Guo, Di Li

Keywords:

Initial Pitting, LY12, Simulated Marine Atmosphere Corrosion

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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