Application of Microelectrochemical Methods for Understanding Localized Corrosion Behavior of Aluminum Alloys

2012 ◽  
pp. 351-361
Author(s):  
R. G. Buchheit ◽  
N. Birbilis
Keyword(s):  
Aluminum Alloys ◽  
Corrosion Behavior ◽  
Localized Corrosion

scholarly journals Assessment of nickel titanium and beta titanium corrosion resistance behavior in fluoride and chloride environments

2013 ◽  
Vol 83 (5) ◽  
pp. 864-869 ◽  
Author(s):  
Elisa J. Kassab ◽  
José Ponciano Gomes
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Fluoride Concentration ◽  
Nickel Titanium ◽  
Localized Corrosion ◽  
General Corrosion ◽  
Nacl Solution ◽  
Galvanic Coupling ◽  
Beta Titanium

ABSTRACT Objective: To assess the influence of fluoride concentration on the corrosion behavior of nickel titanium (NiTi) superelastic wire and to compare the corrosion resistance of NiTi with that of beta titanium alloy in physiological solution with and without addition of fluoride. Materials and Methods: NiTi corrosion resistance was investigated through electrochemical impedance spectroscopy and anodic polarization in sodium chloride (NaCl 0.15 M) with and without addition of 0.02 M sodium fluoride (NaF), and the results were compared with those associated with beta titanium. The influence of fluoride concentration on NiTi corrosion behavior was assessed in NaCl (0.15 M) with and without 0.02, 0.04, 0.05, 0.07, and 0.12 M NaF solution. Galvanic corrosion between NiTi and beta titanium were investigated. All samples were characterized by scanning electron microscopy. Results: Polarization resistance decreased when NaF concentration was increased, and, depending on NaF concentration, NiTi can suffer localized or generalized corrosion. In NaCl solution with 0.02 M NaF, NiTi suffer localized corrosion, while beta titanium alloys remained passive. Current values near zero were observed by galvanic coupling of NiTi and beta titanium. Conclusions: There is a decrease in NiTi corrosion resistance in the presence of fluoride. The corrosion behavior of NiTi alloy depends on fluoride concentration. When 0.02 and 0.04 M of NaF were added to the NaCl solution, NiTi presented localized corrosion. When NaF concentration increased to 0.05, 0.07, and 0.12 M, the alloy presented general corrosion. NiTi corrosion resistance behavior is lower than that of beta titanium. Galvanic coupling of these alloys does not increase corrosion rates.

scholarly journals Effect of Cu Content on Corrosion Behavior of 7xxx Series Aluminum Alloys

2004 ◽  
Vol 151 (5) ◽  
pp. B271 ◽  
Author(s):  
Qingjiang Meng ◽  
G. S. Frankel
Keyword(s):  
Aluminum Alloys ◽  
Corrosion Behavior ◽  
Cu Content

Effect of an Mg-rich matrix on the corrosion behavior of As-cast magnesium-aluminum alloys

2000 ◽  
Vol 6 (5) ◽  
pp. 441-448 ◽  
Author(s):  
Choong Do Lee ◽  
Choon Sik Kang ◽  
Kwang Seon Shin
Keyword(s):  
Aluminum Alloys ◽  
Corrosion Behavior ◽  
Cast Magnesium

Investigation on the corrosion behavior of aluminum alloys 3A21 and 7A09 in chloride aqueous solution

2013 ◽  
Vol 50 ◽  
pp. 15-21 ◽  
Author(s):  
Bin Wang ◽  
Lunwu Zhang ◽  
Yan Su ◽  
Xianliang Mou ◽  
Yong Xiao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aluminum Alloys ◽  
Corrosion Behavior

The effect of droplet size on the localized corrosion of high-strength aluminum alloys

2016 ◽  
Vol 67 (12) ◽  
pp. 1294-1307 ◽  
Author(s):  
S. P. Knight ◽  
A. D. Sudholz ◽  
A. Butler ◽  
S. Palanisamy ◽  
M.S. Dargusch ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Droplet Size ◽  
High Strength ◽  
Localized Corrosion ◽  
High Strength Aluminum Alloys
Sign in / Sign up

Export Citation Format

Share Document