Preparation method of antioxidant copper-clad iron composite powder

Abstract

The invention relates to the technical field of copper-clad iron composite powder preparation, and specifically relates to a preparation method of an antioxidant copper-clad iron composite powder. Iron powder is prepared by using a waste etching solution of a circuit board as a raw material, hydrothermal coke is obtained through treatment of reaction materials, the substances such as polyurethane,copper sulfate, hydrothermal coke and sodium tartrate are dispersed into deionized water, an electroless copper plating solution is obtained, and finally iron powder is put into the heated electroless copper plating solution to obtain the antioxidant copper-clad iron composite powder; reducing gas is used for oxidizing copper ions to be separated out of the surface of the iron powder, the copperions are unlikely to oxidize in the preparation process, polymethyl acrylate can increase the copper plating area of the iron powder, the contact tightness degree between copper and iron in the copper-clad iron composite powder is improved, bubbles are unlikely to generate, the polymethyl acrylate and polyurethane can inhibit the separation of the growth of copper crystal particles under relatively high temperature environments, the corrosion resistance and antioxidant performance of a copper plating layer for inorganic strong acid and strong alkali are improved, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of preparation of copper-clad iron composite powder, in particular to a preparation method of anti-oxidation copper-clad iron composite powder. Background technique [0002] Copper-clad iron composite powder is an ideal material for oil-impregnated bearings developed and produced in recent years. It is based on iron powder and coated with a layer of copper film on the surface of its particles to form a copper-iron-based composite with the same appearance and color as copper powder. pink. Compared with the oil-impregnated bearing made of bronze powder, the oil-impregnated bearing produced with copper-clad iron composite powder not only meets the requirements of environmental protection, but also has a much lower price, and is widely used in the manufacture of powder metallurgy oil-impregnated bearings, friction materials and bonding in diamond tools phase material. [0003] The powder metallurgy products pr...

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that the physical contact between copper and iron is easy to wrap the gas in it, which reduces the contact tightness and causes the copper film to bubble and fall off. In addition, copper powder