The effect of Cu2+ concentration on the stress corrosion cracking susceptibility of α-brass in cupric nitrate solutions

被引：18

作者：

Giordano, CM ^{[1
]}

Duffo, GS ^{[1
]}

Galvele, JR ^{[1
]}

机构：

[1] Comis Nacl Energia Atom, Dept Mat, RA-1429 Buenos Aires, DF, Argentina

来源：

CORROSION SCIENCE | 1997年 / 39卷 / 10-11期

关键词：

brass; alloy; polarization; stress corrosion;

D O I：

10.1016/S0010-938X(97)00085-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stress corrosion cracking (SCC) susceptibility of alpha-brass in aqueous cupric nitrate solutions was studied. The effect of the Cu2+ ion concentration on the stress corrosion crack propagation rate (CPR) was measured. A linear relationship between the logarithm of the CPR and the logarithm of the Cu2+ concentration was found in all the alloys studied. The slope of this relationship was very close to that reported for the cuprous ion exchange current density and the cupric ion concentration: delta log i(o(Cu+-->Cu))/delta log [Cu2+]. All the cracks found were transgranular, and the crack propagation mechanism was explained through the surface mobility SCC mechanism. (C) 1997 Elsevier Science Ltd.

引用

页码：1915 / 1923

页数：9

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