Au蒸着膜の引張り破壊 (III)

概要

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The propagation of the fracture under dynamic tensile strain of vacuum-evaporated gold films was observed directly in a scanning electron microscope and a transmission electron microscope. The dynamic testing for this observation was accomplished by mounting the film on rubber substrate. Gold films from 470 to 720Å in thickness used in this study were heated at different temperatures ranging from 100 to 700 °C. The total strain of the film was usually of the order of 2.4 to 5.1% at fracture. It was shown that localized plastic deformation dispersed in a region of the tip of the fracture and the film edges exhibited a ragged type fracture. The fracture strain ratio (εd/εs) of dynamic and static fracture gold films increased with increasing thickness.
日本真空協会の論文