Salt‐spray corrosion behavior of a Cu–Al composite plate under AC current

2019 ◽  
Vol 71 (4) ◽  
pp. 608-616
Author(s):  
Yulin Cheng ◽  
Xiaoguang Yuan ◽  
Hongjun Huang ◽  
Xiaojiao Zuo ◽  
Yifan Zhang
Keyword(s):  
Corrosion Behavior ◽  
Composite Plate ◽  
Salt Spray ◽  
Salt Spray Corrosion ◽  
Al Composite ◽  
Ac Current

Electrochemical and Salt Spray Corrosion Behavior of Copper Alloy Contact Wires in Chloride Solution

2014 ◽  
Vol 789 ◽  
pp. 622-626
Author(s):  
Peng Chao Zhang ◽  
Jian Zhang ◽  
Jin Chuan Jie ◽  
Yuan Gao ◽  
Yong Dong ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Corrosion Test ◽  
Chloride Solution ◽  
Copper Alloys ◽  
Salt Spray ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Corrosion Mechanism ◽  
Salt Spray Corrosion ◽  
Surface Morphologies

The effect of different alloying elements on corrosion behavior of copper alloys was investigated using electrochemical corrosion and salt spray corrosion test in NaCl solution. Cu-Ag has the most stable corrosion current in the potentiostatic scanning test, exhibiting a better corrosion resistant performance. It can be analyzed from corrosion surface morphologies that Cu-Ag presents exfoliation corrosion mechanism while Cu-Sn shows crevice corrosion mechanism. Cu-Mg has a complex corrosion process caused by multiple corrosion mechanism. In the salt spray corrosion test, the corrosion degree of Cu-Ag is lighter than those of Cu-Sn and Cu-Mg after 24h test. Therefore, the Cu-Ag alloy exhibits the best corrosion resistance in chloride solution.

scholarly journals Microstructure and Corrosion Behavior of Cold-Sprayed Zn-Al Composite Coating

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 931 ◽  
Author(s):  
Zhipo Zhao ◽  
Junrong Tang ◽  
Naeem ul Haq Tariq ◽  
Jiqiang Wang ◽  
Xinyu Cui ◽  
...  
Keyword(s):  
Composite Coating ◽  
Corrosion Behavior ◽  
Salt Spray ◽  
Neutral Salt ◽  
X Ray Diffraction ◽  
Corrosion Properties ◽  
X Ray ◽  
Corrosion Medium ◽  
Al Composite ◽  
Products Analysis

A Zn–Al composite coating was successfully deposited on Q235 steel by cold spray technology for the corrosion protection in the marine atmosphere. The microstructure and corrosion behavior of the prepared coating was studied byScanning Electron Microscope (SEM), X-ray Diffraction (XRD), salt spray test and electrochemical experiments. A 2400-h neutral salt spray corrosion test (with a corrosion medium of 3.5% sodium chloride solution) showed that the prepared cold-sprayed Zn-Al composite coating has excellent anti-corrosion properties. Based on the microstructure evolution and corrosion products analysis, droplets’ flow-driven ‘synergistic corrosion effect’ was proposed to explain the co-corrosion behavior of Zn and Al particles in the composite coating.

Cyclic behavior and hysteresis model of beam-column joint under salt spray corrosion environment

2021 ◽  
Vol 183 ◽  
pp. 106737
Author(s):  
Hao Wang ◽  
Youde Wang ◽  
Zongxing Zhang ◽  
Xiaogang Liu ◽  
Shanhua Xu
Keyword(s):  
Salt Spray ◽  
Cyclic Behavior ◽  
Hysteresis Model ◽  
Salt Spray Corrosion ◽  
Column Joint

Study on Interface Microstructures of Cu-Al Composite Plate Fabricated by Cast Rolling

2019 ◽  
Vol 28 (12) ◽  
pp. 7241-7247 ◽  
Author(s):  
Ya-zhou Liu ◽  
Wen-yan Wang ◽  
Ya-bo Huang ◽  
Jing-pei Xie ◽  
Ji-yao Liu ◽  
...  
Keyword(s):  
Composite Plate ◽  
Al Composite

scholarly journals Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal

2021 ◽  
Vol 10 (1) ◽  
pp. 1318-1328
Author(s):  
Hua Yu ◽  
Liangliang Zhang ◽  
Shuai Li ◽  
Fangfang Cai ◽  
Yunpeng Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Corrosion Behavior ◽  
Salt Spray ◽  
Ternary Eutectic ◽  
Average Particle Size ◽  
Testing Machine ◽  
Joint Interface ◽  
Average Particle ◽  
Automatic Production ◽  
Brazed Joint

Abstract To meet the requirements of automatic production, a new type of green BAl88Si cored solder was developed. The lap brazing experiments were carried out with copper and aluminum as brazing substrates. The microstructure, phase composition, and corrosion behavior of solder joint interface were studied by field emission scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, electron backscattering diffraction, tensile testing machine, and electrochemical workstation. The results show that the brazing joint of Cu/BAl88Si/Al is metallurgical bonding, and the brazing joint of Cu/BAl88Si/Al is composed of Cu9Al4, CuAl2, a-Al, (CuAl2 + a-Al + Si) ternary eutectic. In addition, there is no obvious preference for each grain in the brazing joint, and there are S texture {123}<634>, Copper texture {112}<111>, and Brass texture {110}<112>. The interface of Cu9Al4/CuAl2 is a non-coherent crystal plane and does not have good lattice matching. The average particle size of CuAl2 is 11.95 µm and that of Al is 28.3 µm. However, the kernel average misorientation (KAM) value at the brazed joint interface is obviously higher than that at the brazed joint interface copper, so the defect density at the brazed joint interface aluminum is higher than that at the brazed joint interface copper. At the same time, due to poor corrosion resistance at the interface on the aluminum side of the brazed joint, serious corrosion spots and corrosion cracks occur at the same time, which leads to the shear performance of the brazed joint decreasing by about 75% after salt spray test for 240 h.

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