Method of manufacturing silver flake

Abstract

A method of manufacturing silver flake, whereby characteristic of a plating film of providing uniform thickness is utilized, and material selected for use as a substrate is that which is easily removed and broken. First, a layer of silver metal is plated on a surface of the substrate, whereafter such test specimen is crushed and the substrate removed, or first remove the substrate material and thereafter crush, and that which remains is silver powder of extremely uniform thickness. The silver flake thus acquired is provided with superior thermal and electrical conductivity in a specific direction.

1 . A method of manufacturing silver flake comprising steps of: 
 a) selecting a removable material as a substrate;    b) plating a silver metal layer on the substrate;    c) removing the substrate, and acquire the silver flake of uniform thickness.    
     
     
         2 . The method of manufacturing silver flake according to  claim 1 , wherein after step b, the following step can be further implemented: 
 b1. crush the substrate containing the silver metal layer.    
     
     
         3 . The method of manufacturing silver flake according to  claim 1 , wherein after step c, the following step can be further implemented: 
 c2. crush the silver metal layer having already removed the substrate.    
     
     
         4 . The method of manufacturing silver flake according to  claim 1 , wherein material of the silver metal layer is silver metal.  
     
     
         5 . The method of manufacturing silver flake according to  claim 1 , wherein material of the silver metal layer is a silver alloy.  
     
     
         6 . The method of manufacturing silver flake according to  claim 1 , wherein material of the silver metal layer is metal containing silver as a constituent.  
     
     
         7 . The method of manufacturing silver flake according to  claim 1 , wherein material of the substrate comprises metal, ceramic, and plastic.