Preparation method of stainless steel surface copper-silver diffusion coating layer

Abstract

The invention relates to a preparation method of a stainless steel surface copper-silver diffusion coating layer, which is characterized in that: a double-layer glow ion metal cementation method is utilized to infiltrate copper on the surface of a stainless steel base material, and an oxidized layer and a copper film on the surface of the stainless steel base material are removed; then a chemical plating method is utilized to plate silver on the surface of the stainless steel base material; and finally thermal diffusion treatment on the stainless steel base material after being plated with silver is carried out, so an antibacterial sterilization film layer with graded distribution of copper and silver on the surface of the stainless steel base material is formed. The antibacterial stainless steel can greatly improve the antibacterial and sterilization effect under the common effect of the copper and the silver, can reduce the production cost, and can solve the problem of the great consumption of the energy and the raw material caused by the integral smelting method. The method has good repeatability, can easily control the quality, is simple to operate, and can be widely applicable to the production of the antibacterial stainless steel product.

Description

technical field [0001] The invention relates to a method for infiltrating ions on a metal surface, in particular to a method for infiltrating copper and silver on the surface of stainless steel by combining a double-layer glow ion infiltrating metal method and an electroless plating method. Background technique [0002] The existing antibacterial stainless steel is divided into surface-coated antibacterial stainless steel, composite antibacterial stainless steel, and antibacterial stainless steel with added antibacterial elements. [0003] Surface-coated antibacterial stainless steel is generally based on stainless steel, and organic antibacterial agents and photocatalyst powder materials are coated on it by spraying, roller coating, sol, composite plating and other processes to form a unique antibacterial coating product. However, metal materials often require high-temperature heat treatment, and organic antibacterial agents have relatively poor heat resistance. In additio...

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Problems solved by technology

[0012] The invention provides a method for preparing a copper-silver infiltrated coating on the surface of stainless steel, so as to overcome the problems of high energy and raw material consumption, complicated follow-up process and difficult control caused by the existing overall smelting method; the antibacterial effect caused by the ion implantation method cannot Persistent problems; the problem of low sterilization rate caused by single-layer glow ion metallization technology or electroless plating technology; problems caused by high temperature treatment and sunlight exposure conditions caused by spray coating, roller coating, sol, composite plating and other technologies question

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