FABRICATION AND CHARACTERIZATION OF NANOPOROUS MANGANESE STRUCTURE BY LASER DEPOSITION HYBRID SELECTIVE ELECTROCHEMICAL DEALLOYING

摘要

A novel approach is proposed and developed tornfabricate nanoporous structure on metal substrate forrnpotential functionalization by laser deposition of Cu-rnMn alloy hybrid selective electrochemical dealloying.rnWith a deep understanding of the dealloying behavior,rnwe are able to selectively dissolve the relative inertrnelement Cu instead of conventionally the relativernactive element Mn. As a result, a novel nanoporous Mnrnstructure was successfully realized by our hybridrnapproach. Due to the characteristics of laser deposition,rnwe are also able to form this nanoporous structure onrnany location with any shape. This paper reports inrndetail the fabrication approach for the nanoporousrnstructure, including the formation basis, the influencernof dealloying time, current density and laser scanningrnspeed on the nanoporous structures. Therncharacterization of this nanoporous structure is alsornwell presented covering the microstructure andrnhomogeneity.