期刊
MATERIALS LETTERS
卷 293, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.129735
关键词
Corrosion; Deformation and fracture; Metals and alloys; Spectroscopy
The performance of Benzotriazole (BTA) as a stress corrosion cracking (SCC) inhibitor was investigated for Cu-30Zn and Cu-27Ni alloys in Mattsson's solution using electrochemical techniques and slow strain rate test (SSRT). The addition of BTA increased the polarization resistance and formed a protective film on the surface of the Cu-27Ni alloy. BTA also decreased the susceptibility to SCC, with more significant improvement observed in the Cu-27Ni alloy.
The performance of Benzotriazole (BTA) as a stress corrosion cracking (SCC) inhibitor is investigated for Cu-30Zn and Cu-27Ni alloys in Mattsson's solution using electrochemical techniques and slow strain rate test (SSRT). With the addition of BTA, the polarization resistance increases for both alloys. Electrochemical impedance measurements show that BTA can form a protective film on the surface of the Cu-27Ni alloy and shifts the corrosion potential to nobler states. BTA also improves the corrosion resistance of the Cu-30Zn alloy by controlling the cathodic reaction rate and charge transfer resistance. SSRT results reveal that the presence of BTA decreases the susceptibility to SCC for both alloys; this improvement is more significant for Cu-27Ni alloy. Fractographic analysis after SSRT confirms that crack propagation regime is controlled by the BTA concentration. For Cu-27Ni alloy, fracture type changes from intergranular brittle to ductile as the protectiveness of BTA increases. Besides, BTA recovers the ductility by decreasing crack tip dissolution and growth as fewer cracks are observed around the necked area of fractured Cu-30Zn alloy tensile sample. (c) 2021 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