A kind of method for preparing complex surfactant/la-ni-mo-w co-deposition coating on copper substrate

A technology of surfactant and copper matrix is ​​applied in the field of preparing compound surfactant/La-Ni-Mo-W co-deposition coating, which can solve the problem of no introduction of rare earth elements and surfactants, poor coating stability and chemical activity , low hydrogen evolution overpotential and other problems, to achieve the effect of simple preparation method, high corrosion resistance and high chemical activity
CN105543912BActive Publication Date: 2018-03-09SHANGHAI INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF TECH
Publication Date
2018-03-09

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Abstract

The invention discloses a method for preparing a compound surfactant / La-Ni-Mo-W codeposited coating on a copper matrix. The method comprises the following steps: pretreating a pure copper sheet by polishing, deoiling and etching; and carrying out electroplating under thermostatic water bath conditions by using the copper sheet as a cathode and a platinum-plated metal titanium screen as an anode, thereby obtaining the compound surfactant / La-Ni-Mo-W codeposited coating. The compound surfactant and rare-earth element lanthanum (La) are added into the nickel (Ni)-molybdenum (Mo)-tungsten (W) plating solution to prepare the codeposited coating; and the obtained compound surfactant / La-Ni-Mo-W codeposited coating has the advantages of uniform thickness, high hardness, favorable wear resistance, favorable corrosion resistance, high stability and high hydrogen evolution activity.
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Description

technical field

[0001] The invention relates to the technical field of electroplating, in particular to a method for preparing a composite surfactant / La-Ni-Mo-W co-deposition coating on a copper substrate. Background technique

[0002] Electroplating (electrodeposition) is the process of using the principle of electrolysis to reduce the cations of the plated metal on the surface of the workpiece to be plated and to plate a thin layer of other metals or alloys on the surface of some metals, so that the surface of the metal or other materials can be attached. The process of one layer of metal film can prevent metal oxidation (such as rust), improve wear resistance, conductivity, light reflection, corrosion resistance (copper sulfate, etc.) and enhance the appearance. With the advancement of science and technology, a single metal coating can no longer meet the needs of society. Composite electroplating (also known as dispersed electroplating) is a composite coating in which so...

Claims

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