期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 119, 期 1-2, 页码 30-39出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.07.040
关键词
Alloys; Oxides; Corrosion; Electrochemical techniques
In this study, we have investigated the effect of phosphate ions on the corrosion behaviour of brass in 0.1 M Na(2)SO(4) solution in acidic (pH 2.1), neutral (pH 7.2) and alkaline (pH 12.3) solutions. For this purpose, potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) techniques were used. The surface morphology of the metal surface after exposed to corrosive medium was investigated by scanning electron microscopy (SEM). The effect of temperature has also studied in the temperature range from 293 K to 353 K. Some thermodynamic parameters were calculated and discussed. It was found that, PO(4)(3-) ions could inhibit the corrosion of brass in Na(2)SO(4) solution. However, the inhibition efficiency decreased with increasing temperature. The inhibition effect Of PO(4)(3-) ions was explained by complex formation between phosphate ions and corrosion products which physically adsorbed on the metal surface. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据