title: Phase separating bulk metallic glass: a hierarchical composite.
abstract: Phase separating systems present a unique opportunity for designing composites with hierarchical microstructure at different length scales. We report here our success in synthesizing phase separating metallic glasses exhibiting the entire spectrum of microstructural possibilities expected from a phase separating system. In particular, we report novel core shell and hierarchical structures of spherical glassy droplets, resulting from critical wetting behavior and limited diffusion. We also report synthesis of a bulk phase separating glass in a metallic glass system. The combination of unique core shell and hierarchical structures in metallic glass systems opens a new avenue for the microstructure design of metallic glasses.
authors.affiliation: Department of Metallurgical Engineering, Center for Noncrystalline Materials, Yonsei University, Seoul 120-749, Korea.
authors.forename: Byung Joo
authors.initials: BJ
authors.lastname: Park
authors.forename: Hye Jung
authors.initials: HJ
authors.lastname: Chang
authors.forename: Do Hyang
authors.initials: DY
authors.lastname: Kim
authors.forename: Won Tae
authors.initials: WT
authors.lastname: Kim
authors.forename: Kamanio
authors.initials: K
authors.lastname: Chattopadhyay
authors.forename: T A
authors.initials: TA
authors.lastname: Abinandanan
authors.forename: Saswata
authors.initials: S
authors.lastname: Bhattacharyya