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| A STUDY OF THE DEZINCIFICATION MECHANISM OF (α+β) BIPHASE BRASS (Ⅱ) |
| Gan Fuxing Zou Jinyun Yao Luan(The Electrochemistry Laboratory; Wuhan University; Wuchan) |
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Abstract The dczincification behavior of an (α+β) brass (HPb59-1)in deaerated acidified solution of sodium chloride containing no Cu~+ was investigated by rotating ring-disc electrode. Experimental results show that the collection efficiency of the brass disc-Pt ring electrode changes with time and rotating speed and disc current during anodic dissolution. Thus it can be proved that the dezincification of this (α+β) brass follows the dissolution-redeposition me chanism. According to the linear relationship of(N_(Cu)~0+-N/N-ω), the rate constant of copper redeposition reaction has been calculated to be 2.1×10~(-2) cm/Sec.
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Received: 25 August 1983
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[1] 甘复兴,邹津耘,姚录安,中国腐蚀与防护学报,3,2,59(1983)
[2] Albery W. J. and Hitchman, M. L. "Ring-Disc Electrodes", P.1～28, Oxford University Press, (1971)
[3] 邹津耘,甘复兴,柳传忠,姚录安,中国腐蚀与防护学报,2,3,1(1982)
[4] #12 |
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