STUDY ON THE ELECTROCHEMICAL PERFORMANCES OF SEGREGATION PHASES IN ALUMINUM ANODES CONTAINING RE

J Chin Soc Corr Pro

2003, Vol. 23

Issue (6): 355-358 DOI:

Research Report

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STUDY ON THE ELECTROCHEMICAL PERFORMANCES OF SEGREGATION PHASES IN ALUMINUM ANODES CONTAINING RE

Gongtai Qi;June Qv;Haixing Liao

华中科技大学化学系应用化学系

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Abstract It was found by EMPA and energy spectrum analysis t hat in Al-5Zn-0.05In-0.1Sn-1Mg-03RE anodes,the segregation phases are Sn phase ,Fe phase and RE phase.According to the average contents of four representative phase points,segregation phase alloys were melted.The potential t ests of segregation phases and EMPA surface scan analysis of corroded aluminum a nodes showed that Sn phase is anodic phase,Fe phase and RE phase are cathodic phases.Cathodic polarization curve of cathodic phases showed that Fe phase is th e main cathodic segregation phase to cause self-corrosion of aluminum anodes,and temperature has influence on the electrochemical performances of segregation ph ases.

Key words: aluminum alloy sacrificial anode segregation phase e lectrochemical performance

Received: 28 June 2002

ZTFLH:

TG174.41

Corresponding Authors: June Qv E-mail: chuchulily@163.com

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Gongtai Qi; June Qv; Haixing Liao. STUDY ON THE ELECTROCHEMICAL PERFORMANCES OF SEGREGATION PHASES IN ALUMINUM ANODES CONTAINING RE. J Chin Soc Corr Pro, 2003, 23(6): 355-358 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2003/V23/I6/355

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[1]	;. EVALUATION PERFORMANCE OF SACRIFICIAL ANODE USING GALVANIC CURRENT[J]. 中国腐蚀与防护学报, 2005, 25(3): 176-178 .
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