Composite material, terminal and method for manufacturing terminal

Abstract

There is provided a composite material used in a manufacture of a terminal having a soldering portion and a terminal mating portion, that is a composite material in which a metal coating containing at least one of silver and tin and a composite coating composed of a silver layer containing carbon particles are provided on a base material, wherein there are a portion where the metal coating is exposed and a portion where the composite coating is exposed.

1 . A composite material used in a manufacture of a terminal having a soldering portion and a terminal mating portion, that is a composite material in which a metal coating containing at least one of silver and tin and a composite coating composed of a silver layer containing carbon particles are provided on a base material,
 wherein there are a portion where the metal coating is exposed and a portion where the composite coating is exposed.   
     
     
         2 . The composite material according to  claim 1 , wherein the portion where the metal coating is exposed corresponds to the soldering portion in the terminal, and the portion where the composite coating is exposed corresponds to the terminal mating portion in the terminal. 
     
     
         3 . A method for manufacturing a terminal, the method including: processing the composite material according to  claim 1  into a shape of a terminal. 
     
     
         4 . A terminal, which is a terminal having a coating on a base material and having a soldering portion and a terminal mating portion, the coating including a metal coating containing at least one of silver and tin on the base material, and a composite coating composed of a silver layer containing carbon particles on the base material,
 wherein a portion where the metal coating of the terminal is exposed constitutes the soldering portion, and a portion where the composite coating of the terminal is exposed constitutes the terminal mating portion.   
     
     
         5 . The terminal according to  claim 4 , wherein the terminal is a male terminal that is adapted to mate with a female terminal having a receiving portion. 
     
     
         6 . The terminal according to  claim 4 or 5 , wherein the metal coating is a silver coating composed of silver on an entire surface layer of the base material, and the composite coating is provided on a part of the silver coating. 
     
     
         7 . The terminal according to  claim 6 , wherein a thickness of the metal coating is 0.01 to 2.0 μm. 
     
     
         8 . The terminal according to  claim 4 , wherein a proportion of the carbon particles on a surface of the composite coating is 1 to 80 area %. 
     
     
         9 . The terminal according to  claim 4 , wherein a thickness of the composite coating is 0.5 to 15 μm. 
     
     
         10 . The terminal according to  claim 4 , wherein an underlayer composed of at least one selected from the group consisting of Cu, Ni, Sn, and Ag is provided on the base material, and the metal coating and composite coating are provided on the underlayer. 
     
     
         11 . The terminal according to  claim 4 , further having a spacer portion that sets apart between the soldering portion and the terminal mating portion. 
     
     
         12 . A method for manufacturing a terminal, which is a method including: forming a metal coating containing at least one of silver and tin, and a composite coating composed of a silver layer containing carbon particles on a base material; and processing an obtained composite material into a shape of a terminal,
 wherein a portion where the metal coating of the terminal is exposed constitutes a soldering portion, and a portion where the composite coating of the terminal is exposed constitutes a terminal mating portion.   
     
     
         13 . A method for manufacturing a terminal, which is a method including: processing a base material into a shape of a terminal; and forming a metal coating containing at least one of silver and tin, and a composite coating composed of a silver layer containing carbon particles on the processed base material,
 wherein a portion where the metal coating of the terminal is exposed constitutes a soldering portion, and a portion where the composite coating of the terminal is exposed constitutes a terminal mating portion.   
     
     
         14 . A method for manufacturing a terminal, which is a method including: forming a silver coating composed of silver on an entire surface layer of a base material; forming a composite coating composed of a silver layer containing carbon particles on a part of the silver coating; and processing an obtained composite material into a shape of a terminal,
 wherein a portion where the silver coating of the terminal is exposed constitutes a soldering portion, and a portion where the composite coating of the terminal is exposed constitutes a terminal mating portion.   
     
     
         15 . A method for manufacturing a terminal, which is a method including: processing a base material into a shape of a terminal; forming a silver coating composed of silver on an entire surface layer of the processed base material; and forming a composite coating composed of a silver layer containing carbon particles on a part of the silver coating,
 wherein a portion where the silver coating of the terminal is exposed constitutes a soldering portion, and a portion where the composite coating of the terminal is exposed constitutes a terminal mating portion.   
     
     
         16 . The method for manufacturing a terminal according to  claim 12 , wherein the terminal is a male terminal to be mated with a female terminal having a receiving portion. 
     
     
         17 . The method for manufacturing a terminal according to  claim 14 , wherein at least one of a part of the exposed portion of the silver coating and a part of the exposed portion of the composite coating further constitutes a spacer portion that sets apart between the soldering portion and the terminal mating portion. 
     
     
         18 . The method for manufacturing a terminal according to  claim 14 , wherein a thickness of the silver coating is 0.01 to 2.0 μm. 
     
     
         19 . The method for manufacturing a terminal according to  claim 14 , the method including:
 forming an underlayer composed of at least one selected from the group consisting of Cu, Ni, Sn, and Ag on an entire surface layer of the base material; and   forming the silver coating on an entire surface of the underlayer.