Coating Structure Comprising Graphite Alloy and Preparation Method

Abstract

A coating structure includes a substrate, a first metal layer, a second alloy layer, a third metal layer, and a fourth alloy layer. The first metal layer is plated on an outside of the substrate and does not include graphite. The second alloy layer is plated on an outside of the first metal layer and is synthesized from graphite and metal. The third metal layer is plated on an outside of the second alloy layer and does not include graphite. The fourth alloy layer is plated on an outside of the third metal layer and is also synthesized from graphite and metal.

What is claimed is: 
     
         1 . A coating structure, comprising:
 a substrate;   a first metal layer plated on an outside of the substrate, the first metal layer does not include graphite;   a second alloy layer plated on an outside of the first metal layer, the second alloy layer includes an alloy synthesized from graphite and metal;   a third metal layer plated on an outside of the second alloy layer, the third metal layer does not include graphite; and   a fourth alloy layer plated on an outside of the third metal layer, the fourth alloy layer includes an alloy synthesized from graphite and metal.   
     
     
         2 . The coating structure according to  claim 1 , further comprising a fifth metal layer plated on an outside of the fourth alloy layer, the fifth metal layer does not include graphite. 
     
     
         3 . The coating structure according to  claim 2 , further comprising a sixth alloy layer plated on an outside of the fifth metal layer, the sixth alloy layer includes an alloy synthesized from graphite and metal. 
     
     
         4 . The coating structure according to  claim 1 , further comprising an organic layer covering an outermost side of the coating structure. 
     
     
         5 . The coating structure according to  claim 1 , further comprising a metal sealing layer plated on the coating structure. 
     
     
         6 . The coating structure according to  claim 5 , further comprising an organic layer covering the metal sealing layer. 
     
     
         7 . The coating structure according to  claim 1 , wherein the first metal layer and the third metal layer each include a single layer or multiple stacked layers of at least one of a silver layer, a gold layer, a tin layer, a platinum layer, a nickel layer, a palladium layer, a silver alloy layer, a gold alloy layer, a tin alloy layer, a platinum alloy layer, a nickel alloy layer, or a palladium alloy layer. 
     
     
         8 . The coating structure according to  claim 7 , wherein the second alloy layer and the fourth alloy layer each include a single layer or multiple stacked layers of at least one of an alloy layer synthesized from at least graphite and silver, an alloy layer synthesized from at least graphite and gold, an alloy layer synthesized from at least graphite and tin, an alloy layer synthesized from at least graphite and nickel, an alloy layer synthesized from at least graphite and palladium, an alloy layer synthesized from at least graphite and antimony, or an alloy layer synthesized from at least graphite and bismuth. 
     
     
         9 . A preparation method for a coating structure, the method comprising:
 plating a first metal layer on an outside of a substrate, wherein the first metal layer does not include graphite; and   depositing a second alloy layer synthesized from graphite and a second metal.   
     
     
         10 . The preparation method according to  claim 9 , further comprising mixing colloid including graphite, with electroplating solution including metal ions, wherein the step of depositing the second alloy layer includes electrodepositing the mixed electroplating solution on the outside of the first metal layer. 
     
     
         11 . The preparation method according to  claim 10 , wherein the colloid including graphite is obtained by adding graphite particles to the colloid including Sn 2+  and Pd 2+  and, and mixing. 
     
     
         12 . The preparation method according to  claim 10 , further comprising removing graphite particles from a surface of the second alloy layer. 
     
     
         13 . The preparation method according to  claim 12 , wherein the removing of the graphite particles includes ultrasonic water cleaning. 
     
     
         14 . The preparation method according to  claim 10 , further comprising:
 plating a third metal layer on an outside of the second alloy layer, the third metal layer does not include graphite;   mixing colloid including graphite, with electroplating solution including metal ions; and   making the mixed electroplating solution including the metal ions, electrodeposited on an outside of the third metal layer, to obtain a fourth alloy layer synthesized from graphite and the fourth metal.   
     
     
         15 . The preparation method according to  claim 9 , wherein the first metal layer includes a single layer or multiple stacked layers of at least one of a silver layer, a gold layer, a tin layer, a platinum layer, a nickel layer, a palladium layer, a silver alloy layer, a gold alloy layer, a tin alloy layer, a platinum alloy layer, a nickel alloy layer, or a palladium alloy layer. 
     
     
         16 . The preparation method according to  claim 15 , wherein the second alloy layer includes a single layer or multiple stacked layers of at least one of an alloy layer synthesized from at least graphite and silver, an alloy layer synthesized from at least graphite and gold, an alloy layer synthesized from at least graphite and tin, an alloy layer synthesized from at least graphite and nickel, an alloy layer synthesized from at least graphite and palladium, an alloy layer synthesized from at least graphite and antimony, or an alloy layer synthesized from at least graphite and bismuth. 
     
     
         17 . The preparation method according to  claim 9 , further comprising covering an organic layer on an outermost side of the coating structure. 
     
     
         18 . The preparation method according to  claim 9 , further comprising plating a metal sealing layer on an outer side of the coating structure. 
     
     
         19 . A coating structure, comprising:
 a substrate;   a stack of layers including a plurality of repeating pairs of metal layers and alloy layers, the metal layers do not include graphite, and the alloy layers synthesized from graphite and metal.   
     
     
         20 . The coating structure according to  claim 19 , further comprising:
 a metal sealing layer plated on the stack of layers; and   an organic layer covering the metal sealing layer.