کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
179614 | 459357 | 2013 | 4 صفحه PDF | دانلود رایگان |
The spatial resolution of Mg2 + release from magnesium and its alloys during exposure to aqueous environments has been imaged using a new, solid contact, micropipette-based magnesium-ion selective electrode employed as potentiometric tip in SECM. The detection of metal dissolution is a crucial factor to detect the local microelectrodes established on the surface of the metal, and distinguish the processes related to anodic and cathodic half-cell reactions. Concentration distribution images have been obtained for the magnesium-based alloy AZ63 when galvanically coupled to pure iron during exposure to 1 mM NaCl solution.
► Fabrication of a solid contact micropipette-based magnesium ion-selective electrode is described.
► This Mg2 +-ISME can be used as potentiometric tip in scanning electrochemical microscopy (SECM).
► Micro-spatial distribution of Mg2 + ions from a corroding metal source in aqueous environments is monitored.
Journal: Electrochemistry Communications - Volume 26, January 2013, Pages 25–28