Production Process of Atomized Copper Powder

What does atomized copper powder mean?

Further processing of the atomized Copper powder involves electrolytic copper. The powder can be described as a light red, dendritic and irregularly packed, spherical, or spherical. It can be easily oxidized in humid air. Good formability, low bulk density, and long shelf life. This product is used extensively in powder metallurgy, friction, inks, electric carbon products, chemical contacts and diamond products. High bulk density is a characteristic of spherical or spherical Copper powder. It’s widely used in electronic manufacturing, injection molding and welding.

Process for producing atomized copper powder

Electrolytic copper plate-smelting-water (gas) atomization-vacuum drying-high temperature oxidation-crushing-reduction-crushing-classification


Controlling the impurities during the copper melting process is essential to assure that the final powder exhibits good fluidity.


Heat to 1150-1200degC with an electric furnace, intermediate frequency furnace, or electric arc oven is the normal procedure. The most critical step before the atomization is smelting. It is possible to control the copper smelting procedure and reduce bulk density.

There are two main types of industrialized production methods for atomizing copper powder: the gas and water atomization methods. There is a difference in the atomizing media used, however the process of creating powder remains the same. You can divide it into two types depending on which gas media you use: argon or air atomization. To obtain finer powder, supersonic Atomization is also used.

The effect of water-atomization on gas atomization was proven superior to that of gas atomization.


Reduction is simple. It takes 60 to 120 minutes, with a temperature range of 400 to 600. The atomization process involves a part of oxygen being oxidized on its surface and another part becoming copper oxide which is carried into the inner of the particles. It is necessary to reduce the temperature very quickly in order to remove oxygen. Copper will naturally sintered under this temperature, so grinding large quantities of sintered block is required. New water mist-oxidation methods can now eliminate the reduction step. It saves time and energy.
Antioxidant treatment

Thermodynamically, copper can be unstable in the atmosphere. Copper powder, particularly in humid conditions, will eventually oxidize in the environment. Because copper’s surface is easily absorbed water vapor from the air to create a water film, Because of the thick water film that forms on the particles’ surfaces, little oxygen can be infiltrated. The oxygen concentration is also low. A micro-anode form in the area with easy oxygen access. The copper powder exhibits a very low concentration. Due to the battery effect, copper powder gradually becomes oxidized. Antioxidants are applied to the copper powder, and the film is absorbed and coated. This creates an anti-oxidation effect, and extends the life of the material. Benzotriazole and soap liquid (BTA), gelatin and protein hydrolyzate are all good at inhibiting corrosion in water atomized from copper powder.
Buffalotours is also known as. Buffalotours Nano Technology Co. Ltd. is a reliable global supplier and manufacturer of chemical materials. They have over 12 years’ experience providing high-quality chemicals and Nanomaterials. High purity, small particles size, and low impurity are the hallmarks of the Cu powder that our company produces. We can help you if your requirements are lower.

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