scholarly journals Efficient detection of localized corrosion processes on stainless steel by means of scanning electrochemical microscopy (SECM) using a multi-electrode approach

2019 ◽  
Vol 101 ◽  
pp. 52-55
Author(s):  
Marco Hampel ◽  
Matthias Schenderlein ◽  
Christian Schary ◽  
Matthias Dimper ◽  
Ozlem Ozcan
Keyword(s):  
Stainless Steel ◽  
Scanning Electrochemical Microscopy ◽  
Localized Corrosion ◽  
Efficient Detection ◽  
Electrochemical Microscopy

scholarly journals Use of Amperometric and Potentiometric Probes in Scanning Electrochemical Microscopy for the Spatially-Resolved Monitoring of Severe Localized Corrosion Sites on Aluminum Alloy 2098-T351

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1132 ◽  
Author(s):  
Rejane M. P. da Silva ◽  
Javier Izquierdo ◽  
Mariana X. Milagre ◽  
Abenchara M. Betancor-Abreu ◽  
Isolda Costa ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Oxygen Depletion ◽  
Localized Corrosion ◽  
Alloy Surface ◽  
Al Alloy ◽  
Spatially Resolved ◽  
Lower Oxygen ◽  
Local Ph ◽  
Electrochemical Microscopy

Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric and potentiometric operation modes, in order to address the responsiveness of the probes for the characterization of this galvanic pair system. Next, these sensing probes were employed to characterize the 2098-T351 alloy surface immersed in a saline aqueous solution at ambient temperature. The distribution of reactive sites and the local pH changes associated with severe localized corrosion (SLC) on the alloy surface were imaged and subsequently studied. Higher hydrogen evolution, lower oxygen depletion and acidification occurred at the SLC sites developed on the 2098-T351 Al-alloy.

Sensing application in the precursor region of localized corrosion by scanning electrochemical microscopy

RSC Advances ◽  
2014 ◽  
Vol 4 (100) ◽  
pp. 56582-56595 ◽  
Author(s):  
Hong Luo ◽  
Chaofang Dong ◽  
Shujun Gao ◽  
Cuiwei Du ◽  
Kui Xiao ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Localized Corrosion ◽  
Sensing Application ◽  
Electrochemical Microscopy
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