A nanoscaled underlayer confinement approach for achieving extraordinarily plastic amorphous thin film

作者：Liu, M C; Huang, J C^*; Chou, H S; Lai, Y H; Lee, C J; Nieh, T G

来源：Scripta Materialia, 2009, 61(8): 840-843.

DOI：10.1016/j.scriptamat.2009.07.010

• Metallic glasses
• Layered structures
• Nanocrystalline materials
• Ductility
• Twinning

This study demonstrates that the brittle problem of a metallic glass coating can be alleviated by percolating with a nanocrystalline metallic underlayer. The brittle thin film metallic glass can become highly ductile and exhibit a plastic strain of over 50% at room temperature. The present study has an important implication for microelectromechanical systems applications as the lifespan of a brittle amorphous layer can be significantly improved by using an appropriate metallic underlayer.

• 出版日期2009-10
• 单位中山大学