The electrochemical properties of the key intermetallic particles that form in commercial Mg alloys are presented. Results were collected via microcapillary electrochemical testing upon bulk intermetallic analogs in dilute chloride solution. The intermetallics investigated were Mg17 Al 12, Mg2 Al3, Mg2 Ca, Mg12 Ce, Mg12 La, Mg3 Nd, Mg2 Si, Mg24 Y5, and MgZn2. It was found that the intermetallic phases, with the exception of Mg2 Ca, were more noble than Mg, supporting increased levels of cathodic kinetics; however, the variation in electrochemical response between intermetallics was large in terms of corrosion potential, presence of a passive window, and currents sustained over a range of potentials.
|Journal||Electrochemical and Solid-State Letters|
|State||Published - 2011|
ASJC Scopus subject areas
- Chemical Engineering (all)
- Materials Science (all)
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering