6533b833fe1ef96bd129c9a2
RESEARCH PRODUCT
Effect of Aeration on the Microelectrochemical Characterization of Al[sub 2]Cu Intermetallic Phases
B. VuilleminF. RechouC. HenonRoland Oltrasubject
Materials scienceCapillary actionGeneral Chemical EngineeringMetallurgyAlloyIntermetallicengineering.materialElectrochemistryElectrochemical cellChemical engineeringElectrochemistryengineeringParticleGeneral Materials ScienceElectrical and Electronic EngineeringPhysical and Theoretical ChemistryAerationDissolutiondescription
Local probing of the galvanic coupling between micrometer-sized Al 2 Cu phases and the surrounding aluminum-based matrix of a specially heat-treated 2011 alloy is investigated using a microcapillary electrochemical cell. The aging of an isolated Al 2 Cu particle, i.e., selective dissolution of aluminum, is controlled by the aeration condition at the tip of the capillary due to the nature of the silicon membrane used as a gasket. The local electrochemical behavior of an isolated particle after aging confirms the mass transport control of the oxygen reduction on the galvanic coupling of the particle with the surrounding matrix.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 | Electrochemical and Solid-State Letters |