Electrochemical corrosion behavior of modified MAO film on magnesium alloy AZ31 irradiated by high-intensity pulsed ion beam

2013 ◽  
Vol 228 ◽  
pp. S164-S170 ◽  
Author(s):  
X.G. Han ◽  
F. Zhu ◽  
X.P. Zhu ◽  
M.K. Lei ◽  
J.J. Xu
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
High Intensity ◽  
Ion Beam ◽  
Electrochemical Corrosion ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Electrochemical Corrosion Behavior

Effect of High-Intensity Pulsed Ion Beam Irradiation on the Electrochemical Corrosion Behavior of AZ31 Magnesium Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 571-574
Author(s):  
Peng Li
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Current Density ◽  
Ion Beam ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Open Circuit ◽  
Electrochemical Corrosion Behavior ◽  
Shot Number

HIPIB irradiation experiment is carried out at a specific ion current density of 1.1 J/cm2 with shot number from one to ten in order to explore the effect of shot number on electrochemical corrosion behavior of magnesium alloy. Surface morphologies, microstructure and corrosion resistance of the irradiated samples are examined by scanning electron microscopy (SEM), transmission electron microscope (TEM) and potentiodynamic polarization technique, respectively. It is found that HIPIB irradiation leads to the increase in open circuit potential, corrosion potential and breakdown potential, and the decrease in the corrosion current density and the corrosion rate as compared to the original sample. The improved corrosion resistance is mainly attributed to the grain refinement and surface purification induced by HIPIB irradiation.

Modification of casting magnesium alloy AZ31 irradiated by high intensity pulsed ion beams

2012 ◽  
Vol 24 (2) ◽  
pp. 486-490
Author(s):  
陈占兴 Chen Zhanxing ◽  
曲家惠 Qu Jiahui ◽  
张罡 Zhang Gang
Keyword(s):  
Magnesium Alloy ◽  
High Intensity ◽  
Ion Beams ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Potentiodynamic Tests of Magnesium Alloy AZ31 with Lithium Additive

2013 ◽  
Vol 211 ◽  
pp. 93-100
Author(s):  
Joanna Przondziono ◽  
Witold Walke ◽  
Eugeniusz Hadasik ◽  
Stanisław Lalik
Keyword(s):  
Magnesium Alloy ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Az31 Alloy ◽  
Chloride Ions ◽  
Molar Concentration ◽  
Lithium Content ◽  
Nacl Solution ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

The purpose of the study is to assess electrochemical corrosion resistance of magnesium alloy AZ31 with additives of 4.5, 7.5 and 15 % lithium in NaCl solutions. Corrosion tests were performed in solutions with concentration 0.01 2 M NaCl with application of electrochemical testing system VoltaLab®PGP201. Resistance to electrochemical corrosion was evaluated on the ground of registered anodic polarisation curves by means of potentiodynamic method. Results of performed tests show unequivocally deterioration of corrosion characteristics of the alloy together with increase of molar concentration of NaCl solution. As chloride ions concentration increases, decrease of corrosion potential and polarisation resistance, as well as increase of corrosion current density are observed. Deterioration of corrosion characteristics of AZ31 alloy was shown with the increase of lithium content. It must be highlighted that irrespective of molar concentration of NaCl solution, there is also presence of pitting corrosion in the tested alloy. It proves that magnesium alloy AZ31-Li is not resistant to that type of corrosion. Test results prove that it is necessary to apply protective films on elements made of magnesium alloy with lithium additive.

Electrochemical Corrosion of Magnesium Alloy AZ31 in NaCl Solutions After Rolling

2019 ◽  
pp. 278-292
Author(s):  
Joanna Przondziono ◽  
Eugeniusz Hadasik ◽  
Witold Walke ◽  
Janusz Szala ◽  
Jakub Wieczorek ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Electrochemical Corrosion ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31
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