Home >> Materials Science and Technology, Volume 28, Number 7

Analysis of electrochemical noise and physical model of corrosion process of Al‐Zn‐In series alloys in NaCl solutions

Authors: Wen, J B1; Ma, J L2

Source: Materials Science and Technology, Volume 28, Number 7, July 2012 , pp. 804-807(4)

Publisher: Maney Publishing

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Abstract:

The corrosion process of Al‐5Zn‐0·02In‐1Mg‐0·05Ti (wt-%) alloy was investigated by electrochemical noise. The corroded surfaces of the alloy were observed by scanning electron microscopy. The electrochemical noise data obtained from the corrosion process were analysed using shot noise theory. The pitting and uniform corrosions were confirmed by cumulative probability F [F = (fn)] versus the frequency of events fn. The Weibull probability plots show the three corrosion stages for the alloy: pitting, pitting and dissolution‐precipitation and uniform corrosion. The physical model for the corrosion process has been developed.

Keywords: Physics model; Corrosion; Shot noise theory; Al based sacrificial anode; Electrochemical noise

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/1743284711Y.0000000088

Affiliations: 1: School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China 2: Henan Key Laboratory of Non-Ferrous Metal Materials Science and Processing Technology, Luoyang 471003, China

Publication date: 2012-07-01

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    Materials Science and Technology is the successor of two previous titles, for which digitised archives are available: Metal Science (Vols. 1—17; 1967—84) and Metals Technology (Vols. 1—11; 1974—84).

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