物理气相沉积制备金属玻璃薄膜及其力学性能的样品尺寸效应 |
曹庆平, 吕林波, 王晓东, 蒋建中 |
Magnetron Sputtering Metal Glass Film Preparation and the “Specimen Size Effect” of the Mechanical Property |
CAO Qingping, LV Linbo, WANG Xiaodong, JIANG Jianzhong |
图15 Pd82Si18金属玻璃薄膜(厚度为250 nm,基底为聚酰亚胺)在经历10%应变过程中,裂纹形成的3个阶段[ (a) early-stage deformation where a single shear event within a single shear band leads to the formation of a single step on the surface as explained in the schematic diagram (b) (c) an intermediate stage with a neck formed due to the activation of another shear band, as represented in (d) (e) a fully developed and open crack, the corresponding schematic diagram with the profile of crack edges is depicted in (f) |
Fig.15 Three different stages of crack/shear band evolution in 250 nm thick polymer-supported Pd82Si18 films after straining to 10% can be clearly distinguished[ |
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