CORROSION BEHAVIOR OF Al-BRONZE IN 3.5% NaCl SOLUTION

J Chin Soc Corr Pro

2003, Vol. 23

Issue (6): 345-349 DOI:

Research Report

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CORROSION BEHAVIOR OF Al-BRONZE IN 3.5% NaCl SOLUTION

Hui Yu;Saying Dong;Guosheng Huang

七二五研究所青岛分部

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Abstract The corrosion behavior of Al-bronze in 3.5% NaCl so lution has been investigated by electrochemical methods and surface analysis tec hniques.The results indicated that the metastable β phase suffers a dealumi nization attack superior to the α matrix in the Al-bronze alloy because the β phase own more Al content than that of the α matrix.In the active d issolution section,the impingement appearing owns to the Al element dissolution of the β phase.In the active -passive translation section,most of the Al in the β phase dissolve.The dissolution potential of the phase β moves p ositively and the α matrix begins to dissolve.In the limiting current secti on,the α matrix is the rich Al phase,the anodic section, and suffers seriou s dealuminization corrosion.

Key words: Al-bronze corrosion metastability dissolution potentia l

Received: 14 February 2003

ZTFLH:

TG178

Corresponding Authors: Hui Yu

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Hui Yu; Saying Dong; Guosheng Huang. CORROSION BEHAVIOR OF Al-BRONZE IN 3.5% NaCl SOLUTION. J Chin Soc Corr Pro, 2003, 23(6): 345-349 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2003/V23/I6/345

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