Studies on the Influence of Chloride Ion Concentration on the Corrosion Behavior of ZSMX Magnesium Alloy

2010 ◽  
Vol 95 ◽  
pp. 47-50 ◽  
Author(s):  
Guy Ben-Hamu ◽  
D. Eliezer ◽  
Kwang Seon Shin
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Potentiodynamic Polarization ◽  
Electrochemical Behavior ◽  
Chloride Ion ◽  
Ion Concentration ◽  
Experimental Techniques ◽  
Nacl Solution ◽  
Wrought Magnesium Alloy

The paper presented reveals the influence of chloride ion concentration on the corrosion and electrochemical behavior of new ZSMX wrought magnesium alloy in NaCl solution. The experimental techniques used include potentiodynamic polarization tests. The corrosion rate usually increased with the increase in chloride ion concentration. This result can be explained by the distribution of intermetalics.

Microstructure and Corrosion Behavior of Hot Compressed AZ31B Magnesium Alloy Joint

2016 ◽  
Vol 849 ◽  
pp. 121-127
Author(s):  
Ya Jie Chu ◽  
Xin Chen Han ◽  
Zong Hui Yang ◽  
Xiao Quan Li
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Rate ◽  
Corrosion Behavior ◽  
Immersion Time ◽  
Chloride Ion ◽  
Immersion Test ◽  
Ion Concentration ◽  
Corrosion Morphology ◽  
Az31b Magnesium Alloy ◽  
Gas Tungsten Arc

The extruded AZ31B magnesium alloy plates of 4 mm thickness were butt welded using gas tungsten arc welding (GTA) process. The microstructure and corrosion behavior of the hot compressed welds were evaluated by conducting immersion test in NaCl solution at different immersion time and chloride ion concentrations. The specimens were exposed to immersion in order to characterize their corrosion rates. The corrosion morphology and pit morphology observation was carried out by scanning electron microscopy (SEM). The results showed that the corrosion rate of hot compressed magnesium alloy welds decreased with the increase in immersion time and the corrosion rate increased with the increase in chloride ion concentration, and the corrosion morphology was predominantly influenced by the distribution of β-phase.

scholarly journals Experimental Investigation of the Corrosion Behavior of Friction Stir Welded AZ61A Magnesium Alloy Welds under Salt Spray Corrosion Test and Galvanic Corrosion Test Using Response Surface Methodology

2013 ◽  
Vol 2013 ◽  
pp. 1-17 ◽  
Author(s):  
A. Dhanapal ◽  
S. Rajendra Boopathy ◽  
V. Balasubramanian ◽  
K. Chidambaram ◽  
A. R. Thoheer Zaman
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Rate ◽  
Corrosion Test ◽  
Ph Value ◽  
Galvanic Corrosion ◽  
Salt Spray ◽  
Chloride Ion ◽  
Ion Concentration ◽  
Salt Spray Corrosion ◽  
Friction Stir

Extruded Mg alloy plates of 6 mm thick of AZ61A grade were butt welded using advanced welding process and friction stir welding (FSW) processes. The specimens were exposed to salt spray conditions and immersion conditions to characterize their corrosion rates on the effect of pH value, chloride ion concentration, and corrosion time. In addition, an attempt was made to develop an empirical relationship to predict the corrosion rate of FSW welds in salt spray corrosion test and galvanic corrosion test using design of experiments. The corrosion morphology and the pit morphology were analyzed by optical microscopy, and the corrosion products were examined using scanning electron microscope and X-ray diffraction analysis. From this research work, it is found that, in both corrosion tests, the corrosion rate decreases with the increase in pH value, the decrease in chloride ion concentration, and a higher corrosion time. The results show the usage of the magnesium alloy for best environments and suitable applications from the aforementioned conditions. Also, it is found that AZ61A magnesium alloy welds possess low-corrosion rate and higher-corrosion resistance in the galvanic corrosion test than in the salt spray corrosion test.

Corrosion Behavior of AZ61 Magnesium Alloys in NaCl Solution

2011 ◽  
Vol 239-242 ◽  
pp. 2240-2243
Author(s):  
Yue Sheng Chai ◽  
Li Na Wang ◽  
Gang Sun ◽  
Shu Li Sun ◽  
Min Gang Zhang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Rate ◽  
Magnesium Alloys ◽  
Corrosion Behavior ◽  
Chloride Concentration ◽  
Ion Concentration ◽  
Etching Time ◽  
Protective Film ◽  
Corrosion Morphology ◽  
Az61 Magnesium Alloy

Magnesium alloys are used widely because of its good performance. However, its practical application is restricted by low corrosion resistance. In this study, the effects of corrosion time and NaCl concentration on the corrosion behavior of AZ61 magnesium alloy were investigated from the corrosion morphology and the corrosion rate. These results have displayed that the corrosion rate of AZ61 magnesium alloy decreases with the increasing etching time. Meanwhile, the corrosion rate of AZ61 magnesium alloy increases with the increasing sodium chloride concentration. This is mainly because that the Cl- ion in the solution destroys the protective film on the surface of magnesium alloy and the high Cl- ion concentration accelerates the corrosion rate.

Effect of Chloride Ion Concentration on Electrochemical Behavior and Corrosion Product of AM60 Magnesium Alloy in Aqueous Solutions

CORROSION ◽  
2012 ◽  
Vol 68 (4) ◽  
pp. 045001-1-045001-14 ◽  
Author(s):  
W. Liu ◽  
F. Cao ◽  
A. Chen ◽  
L. Chang ◽  
J. Zhang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Aqueous Solutions ◽  
Corrosion Product ◽  
Electrochemical Behavior ◽  
Chloride Ion ◽  
Ion Concentration

Corrosion Behavior of Cu50Zr40Ti10 Metallic Glass in HCl and NaCl

2013 ◽  
Vol 643 ◽  
pp. 33-36
Author(s):  
Wei Ke An ◽  
An Hui Cai ◽  
Guo Jun Zhou ◽  
Yun Luo ◽  
Tie Lin Li ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Corrosion Behavior ◽  
Corrosion Potential ◽  
Chloride Ion ◽  
Corrosion Current ◽  
Ion Concentration ◽  
Nacl Solution ◽  
Current Densities

The corrosion behavior of Cu50Zr40Ti10 (at. %) in HCl and NaCl solutions was investigated. The corrosion current densities icorr in HCl and NaCl solutions increase with increasing Clconcentration when the Cl- concentration is <0.5 molL-1, then continuously increase in the former and decrease in the latter. The icorr is larger in the latter than in the former when the Clconcentration is <0.5 molL-1, while inversely for in 1 molL-1 Cl- solution. The corrosion potential Ecorr decreases with increasing Cl- concentration in HCl. However, the change of the Ecorr vs. the chloride ion concentration in NaCl solution appears down-up-down.

Effect of LPC on the Corrosion Behavior of AZ81 Magnesium Alloy

2014 ◽  
Vol 998-999 ◽  
pp. 43-46
Author(s):  
Jun Chen ◽  
Quan An Li ◽  
Xing Yuan Zhang
Keyword(s):  
Melting Point ◽  
Magnesium Alloy ◽  
Corrosion Rate ◽  
Intermetallic Compounds ◽  
Corrosion Behavior ◽  
Corrosion Products ◽  
High Melting ◽  
Nacl Solution ◽  
High Melting Point ◽  
Corrosion Rates

The corrosion behavior of AZ81 magnesium alloy with the LPC addition has been investigated in this paper. The results show that with the addition of 1-5% LPC, the microstructure of AZ81 magnesium alloy is remarkably refined, and the spotted, high-melting point phase Al-RE intermetallic compounds is found in the alloy. The corrosion behavior of AZ81 alloy decreases firstly and then increases sharply with the increase of LPC addition. When the content of LPC is 2.5%, AZ81 magnesium alloy shows the lowest corrosion rate. The corrosion rates in 3.5%NaCl solution are always higher than those in 0.5%NaCl solution. The corrosion products from the surface are mainly composed of Mg (OH) 2 compositions.

scholarly journals Corrosion Behavior of Chemical Oxidation Film of Magnesium Alloy in NaCl Solution

2021 ◽  
Vol 719 (2) ◽  
pp. 022092
Author(s):  
De Cheng ◽  
Chen Wen ◽  
Jingying Bai ◽  
Yeshen Qin ◽  
Baocheng Jiao
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Chemical Oxidation ◽  
Nacl Solution
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