scholarly journals Electrochemical Corrosion Behaviour of WE54 Magnesium Alloy

2013 ◽  
Vol 765 ◽  
pp. 644-647
Author(s):  
O. Kazum ◽  
Mathan Bobby Kannan ◽  
Nico Scharnagl ◽  
Carsten Blawert ◽  
Ying He He
Keyword(s):  
Magnesium Alloy ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Electrochemical Techniques ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Pure Magnesium ◽  
Pitting Corrosion Resistance ◽  
Electrochemical Corrosion Behaviour

The electrochemical corrosion behaviour of WE54 magnesium alloy in 0.5 wt.% NaCl solution was studied using electrochemical techniques. Polarization results suggested that the rare-earths in WE54 alloy enhanced the passivation tendency of the alloy and decreased the corrosion current by ~30% compared to pure magnesium. Pitting corrosion resistance was also higher in WE54 alloy than that in pure magnesium. Long-term electrochemical impedance results showed that the polarization resistance of WE54 alloy was more than two times higher than that of pure magnesium even after initial passivity breakdown.

scholarly journals Electrochemical Corrosion of SAC Alloys: A Review

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1276
Author(s):  
Ali Gharaibeh ◽  
Ilona Felhősi ◽  
Zsófia Keresztes ◽  
Gábor Harsányi ◽  
Balázs Illés ◽  
...  
Keyword(s):  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Electrochemical Techniques ◽  
Electrochemical Corrosion ◽  
Linear Sweep Voltammetry ◽  
Lead Free ◽  
Solder Alloys ◽  
Accelerated Corrosion ◽  
Manufacturing Technologies ◽  
Tin Silver Copper

Tin–silver–copper (SAC) solder alloys are the most promising candidates to replace Sn–Pb solder alloys. However, their application is still facing several challenges; one example is the electrochemical corrosion behaviour, which imposes a risk to electronics reliability. Numerous investigations have been carried out to evaluate the corrosion performance of SAC lead-free alloys, regarding the effect of the corrosive environment, the different manufacturing technologies, the effect of fluxes, the metallic contents within the SAC alloys themselves, and the different alloying elements. In these studies, widely used electrochemical techniques are applied as accelerated corrosion tests, such as linear sweep voltammetry and electrochemical impedance spectroscopy. However, there is lack of studies that try to summarise the various corrosion results in terms of lead-free solder alloys including low-Ag and composite solders. This study aims to review these studies by showing the most important highlights regarding the corrosion processes and the possible future developments.

Influence of bicarbonate concentration on the conversion layer formation onto AZ31 magnesium alloy and its electrochemical corrosion behaviour in simulated body fluid

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49910-49922 ◽  
Author(s):  
Arthanari Srinivasan ◽  
Kwang Seon Shin ◽  
Nallaiyan Rajendran
Keyword(s):  
Magnesium Alloy ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Corrosion Behaviour ◽  
Electrochemical Corrosion ◽  
Magnesium Carbonate ◽  
Az31 Magnesium Alloy ◽  
Bicarbonate Concentration ◽  
Sbf Solution ◽  
Electrochemical Corrosion Behaviour

The electrochemical corrosion behaviour of a magnesium carbonate conversion layer-coated AZ31 magnesium alloy was evaluated in simulated body fluid (SBF) solution.

scholarly journals Electrochemical Corrosion Behaviour of ZE41 and QE22 Magnesium Alloys

2011 ◽  
Vol 690 ◽  
pp. 385-388 ◽  
Author(s):  
M. Bobby Kannan ◽  
Carsten Blawert ◽  
Wolfgang Dietzel
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Rare Earths ◽  
Pitting Corrosion ◽  
Corrosion Behaviour ◽  
Electrochemical Corrosion ◽  
Localized Corrosion ◽  
Az80 Magnesium Alloy ◽  
Electrochemical Corrosion Behaviour

The study suggests that the rare-earths containing magnesium alloys ZE41 and QE22 exhibit a poorer corrosion resistance than the AZ80 magnesium alloy. Electrochemical experiments showed that the two rare-earths containing alloys are highly susceptible to localized corrosion. Post corrosion analysis revealed intergranular and pitting corrosion in ZE41, whereas QE22 alloy underwent only pitting corrosion.

Sign in / Sign up

Export Citation Format

Share Document