A method of applying prestress to promote silver alloy thin film deposited on the surface of the silver particles

A method of applying prestress to promote surface of the silver alloy film precipitated silver particles, silver alloy thin film in a fixed manner on both end faces of the film, with a central convex upwardly from the top of the punch, thereby prestressing silver alloy thin film and the protective heat annealing furnace atmosphere or in a vacuum furnace, to increase the residual compressive stress, promote atomic diffusion film, thereby increasing the number of silver particles formed on the surface of the silver alloy film. By the present invention, prestressing a silver alloy thin film on a flexible substrate and an annealing process atomic diffusion behavior of the regulation of the silver alloy thin film, a method of promoting the silver particles formed, to obtain a specific surface area of ​​the flexible polyimide matrix particles silver alloy thin film device provided technical support. Prestressing size can be regulated by adjustment of the mold according to need, can effectively promote the annealing process is formed of silver alloy thin film surface of the silver particles to obtain a flexible base film having a silver alloy composite particles large specific surface area.