Iron-based electrode material with pure copper transition layer and surface pure metal molybdenum or tungsten coating and preparation method for electrode material

Abstract

The invention discloses an iron-based electrode material with a pure copper transition layer and a surface pure metal molybdenum or tungsten coating and a preparation method for the electrode material. The preparation method comprises the following steps: coating pure copper with certain thickness on the surface of an iron-based material to serve as a transition layer by electric brush plating or chemical plating and sputter plating technologies; and depositing metal molybdenum or tungsten by a sputter plating technology to form the novel iron-based electrode material with the pure copper transition layer and the surface pure metal molybdenum or tungsten coating. The iron-based material serves as the electrode material, so the electrode material has high processability, high conductivity, high strength and low cost. One layer of copper is plated on the electrode material, so the conductivity is enhanced; and the copper layer serves as the transition layer, so the film substrate bonding strength of the surface pure metal molybdenum (or tungsten) layer is enhanced; and the surface pure metal molybdenum (or tungsten) has the advantages of corrosion resistance, high strength and hardness and low electrical resistivity, so the specific energy and the specific power of the electrode can be greatly increased, the contact resistance maintains constant and the electric energy consumption is stable and low.

Description

technical field [0001] The invention relates to surface engineering, in particular to an electrode material and a preparation method of an iron base, a pure copper transition layer and a pure metal molybdenum (or metal tungsten) coating on the surface. Background technique [0002] In industrial production, the electrode material is used as a positive electrode 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...

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