Electrochemical behavior of mechanically alloyed hard Cu-Al alloys in marine environment

被引：32

作者：

Shaik, Mahammad Ali ^{[1
]}

Syed, Khader Hussain ^{[1
]}

Golla, Brahma Raju ^{[1
]}

机构：

[1] Natl Inst Technol, Met & Mat Engn Dept, Warangal 506004, Andhra Pradesh, India

来源：

CORROSION SCIENCE | 2019年 / 153卷

关键词：

Cu-Al alloy; Mechanical alloying; Hot press; Microstructure; Corrosion; CORROSION BEHAVIOR; ALUMINUM BRONZE; COPPER; ELEMENTS; BRASS; NICKEL;

D O I：

10.1016/j.corsci.2019.03.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Higher density of 98.66 and 94.60% rho(th) (theoretical density) was achieved for hot pressed Cu and Cu-15Al alloy, respectively. The microstructure of Cu-15Al alloy consists of alpha (Cu0.78Al0.22) and gamma(2) (Cu9Al4) phases. The hardness of Cu was significantly improved (from 1.32 to 6.03 GPa) with the addition of Al. Drastic reduction in corrosion of Cu-15Al (1.6 mpy) when compared to pure Cu (20.7 mpy) was noticed despite the low densification of Cu-Al. The higher impedance of Cu-15Al alloy corroborates the formation of protective layer. This work demonstrates the efficacy of high amount of Al in improving corrosion resistance of Cu.

引用

页码：249 / 257

页数：9

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