|[[Liquid phase separation]]| #author("2020-12-20T10:44:55+09:00","","") -------------------------- *Macroscopically phase separated melt-spun ribbon [#b2105c4a] #ref(http://t-nagase.sakura.ne.jp/pict/20151005/06-02-Ribbon.jpg,left,nowrap,photo) ''Figure 1''~ ''Macroscopically phase separated melt-spun ribbon. Continuous rapidly solidified ribbon shows Co-Si-B amorphous / Cu crystal dual layer structure [1,2]'' ~ ~ We firstly develop a dual-layer ribbon by conventional single-roller melt-spinning method [1,2]. In Co-Cu-Si-B melt-spun ribbon, the roll-side surface comprised Co-Si-B-based amorphous phase with Cu crystalline nanoscale globules, while the free surface showed a thin crystalline Cu layer. A macroscopically separated unique structure was obtained by the simultaneous occurrence of liquid phase separation of the Co-Cu-based alloy system and amorphous phase formation in the Co-Si-B alloy layer.~ ~ REFERENCES~ [1] T. Nagase and Y. Umakoshi: J. of alloys and compounds, 505, L43-L46 (2010)., http://dx.doi.org/10.1016/j.jallcom.2010.06.092~ [2] T. Nagase and Y. Umakoshi: Intermetallics 18, 2136-2144 (2010)., http://dx.doi.org/10.1016/j.intermet.2010.06.020~