Corrosion behavior of Al-15%Mg2Si alloy with 1% Ni addition

被引：14
|
作者：
Sun, Yilin [1 ]
Li, Chong [1 ]
Yu, Liming [1 ]
Gao, Zhiming [1 ]
Xia, Xingchuan [2 ]
Liu, Yongchang [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China
[2] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
来源：
RESULTS IN PHYSICS | 2020年 / 17卷
基金：
中国国家自然科学基金;
关键词：
Corrosion behavior; Al3Ni; Mg2Si; Galvanic cell corrosion; AL-MG2SI ALLOYS; ELECTROCHEMICAL-BEHAVIOR; HYPEREUTECTIC AL-MG2SI; DISSOLUTION PHENOMENA; TENSILE PROPERTIES; CU; MICROSTRUCTURE; PARTICLES; EVOLUTION; MG2SI;
D O I：
10.1016/j.rinp.2020.103129
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion behaviors of Al-15%Mg2Si-1%Ni alloy in 3.5% NaCl solution were studied by characterizing the corrosion morphologies of Al3Ni, Mg2Si, and Al phases. The results show that there are two galvanic coupling systems (Al/Al3Ni and Al/Mg2Si) in Al-15%Mg2Si-1%Ni alloy. In the Al/Al3Ni coupling system, the intermetallic Al3Ni phase (nobler than the Al matrix) acts as the cathode throughout the corrosion process. For the Al/Mg2Si coupling system, electrochemical polarity conversion occurs between the Al matrix and the Mg2Si phase. The corrosion pits around the Al3Ni and Mg2Si are connected to form long corrosion channels, which accelerate corrosion of the Al-Mg2Si-Ni alloys.
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页数：6
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