Inhibition of Dezincification of Brass

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (5): 104-106.

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Inhibition of Dezincification of Brass

Wang Dihua, Zou Jinyun, Qiu Wanchuan, Yang Xinghe

Department of Environmental Science, Wuhan University, Wuhan 430072

Received:1996-12-08 Revised:1997-06-20 Published:1997-10-10 Online:1997-10-10

Abstract

Abstract: The inhibition of dezincification of brass by benzyltriphenyl phosphonium bromide(BPB), benzotriazole(BTA)and traces of arsenic in the alloy was investigated by chronoamperometry and measurements of positron lifetime spectra in chloride solution. The results show that BPB and BTA in the solution and arsenic in the alloy can obviously decrease the transient diffusion current densities of zinc dissolution and reduce the diffusion coefficient of zinc in brass by the order of one to two. The results are interpreted in terms of the(di)vacancy diffusion mechanism.

Key words: brass dezincification, inhibition effect, arsenic, inhibitor

Wang Dihua, Zou Jinyun, Qiu Wanchuan, Yang Xinghe. Inhibition of Dezincification of Brass[J]. Chinese Journal of Applied Chemistry, 1997, 0(5): 104-106.

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Inhibition of Dezincification of Brass

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