期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 26, 期 -, 页码 25-28出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.10.001
关键词
Scanning electrochemical microscopy; Corrosion; Magnesium dissolution; Ion-selective microelectrodes
资金
- MICINN
- European Regional Development Fund (Brussels, Belgium) [CTQ2009-12459]
- Spanish Ministry of Education (MECD, Madrid, Programa de Formacion de Personal Investigador)
- Developing Competitiveness of Universities in the South Transdanubian Region [SROP-4.2.1.B-10/2/KONV-2010-0002]
- National Office for Research and Technology (NKTH, Budapest) [ES-25/2008 TeT]
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. (C) 2012 Elsevier B.V. All rights reserved.
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