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Suppression of Premature Fracture of Silicon under Three‐Point Bending: Role of Nanoscale Localized Deformation of Metallic Multilayered Coating
Author(s) -
Li YuanPing,
Zhu XiaoFei,
Tan Jun,
Zhang GuangPing
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800233
Subject(s) - materials science , brittleness , nanoscopic scale , bending , composite material , deformation (meteorology) , coating , three point flexural test , silicon , brittle fracture , toughening , fracture (geology) , fracture mechanics , metallurgy , toughness , nanotechnology
Brittle single crystal Si with and without Au/Cu multilayer coating was investigated via three‐point bending test. Load‐bearing capacity of the Si coated with the Au/Cu multilayer is improved evidently compared with the bare Si. Especially the nanoscale plastic deformation of the multilayer was observed to be effective in delaying instable crack propagation within the Si. That would shed significant light in toughening methods of brittle materials.