Novel composite electrode material of iron base, copper transitional layer and surface nitride coating and preparation method thereof

Abstract

The invention discloses a novel composite electrode material of an iron base, a copper transitional layer and a surface nitride coating and a preparation method thereof. The novel composite electrode material of the iron base, the copper transitional layer and the surface nitride coating is formed through firstly coating pure copper with certain thickness on the surface of an iron-based material to serve as a transitional layer by using electroplating and brush electroplating technologies or chemical plating and sputtering plating technologies and depositing nitrides on the transitional layer by using a sputtering plating technology. Through using the iron-based material as the electrode material, the novel composite electrode material of the iron base, the copper transitional layer and the surface nitride coating, disclosed by the invention, has the advantages of good machining performance, good conductivity, high strength and low cost. A copper layer is plated on the surface of the electrode material to serve as the transitional layer to increase electrical conductivity and to increase film-based bonding strength of the surface nitride layer; the nitride layer on the surface has the advantages of corrosion resistance, high wear resistance, high strength, high hardness and lower resistance; the specific energy and specific power of an electrode can be greatly increased, the contact resistance is kept constant and electric energy consumption is stable and lower.

Description

technical field [0001] The invention discloses a novel composite electrode material comprising an iron base, a copper transition layer and a surface nitride coating, and belongs to the technical field of surface engineering. Background technique [0002] In industrial production, the electrode material is used as a positive electrode material for electrolysis, and its basic requirements are: good electrical conductivity, electrochemical corrosion resistance, certain mechanical strength and easy processing and manufacturing performance. The initial electrode material is graphite, but it is being phased out because of its low strength, high production cost, easy loss, easy to fall off, and short working life; metal-based electrode materials (such as carbon steel), although they have good strength , plasticity, machinability, and low cost, but it is not corrosion-resistant in use, and consumes a lot of power and has a short life; now stainless steel and metal titanium are commo...

AI Technical Summary

Problems solved by technology

The initial electrode material is graphite, but it is being phased out because of its low strength, high production cost, easy loss, easy to fall off, and short working life; metal-based electrode materials (such as carbon steel), although they have good strength , plasticity, machinability, and low cost, but it is not corrosion-resistant in use, and consumes a lot of power and has a short life; now stainless steel and metal titanium are commonly used as electrode materials, although they have the advantages of corrosion resistance and high strength, but Oxygen is generated at the anode, and a dense oxide film (such as: TiO 2 Film or Cr 2 o 3 film), the conductivity of this type of oxide film is extremely poor, as time goes on, the thickness of the film increases, the conductivity deteriorates, and the power consumption increases sharply