Atomization is the process of breaking molten metal into powder using high-pressure fluids (usually water or gas) or other special methods. High pressure fluid (water or gas) is called atomization medium, atomization medium is water atomization, atomization medium is gas atomization, and of course, other methods can be used to atomize molten metal.

Among them, atomization technology has become the most important method for preparing fine spherical metal and alloy powder. The metal powder prepared by this method has fine particle size (powder particle size

However, no matter what type of atomization method is used, it is generally not desired that the atomizing medium undergoes a chemical reaction with the metal liquid, requiring only a change in the condensed state of the metal (from liquid solidification to solid). Therefore, atomization is classified as a method of physical powder production. In fact, chemical reactions are difficult to avoid. For example, water atomization can lead to reactions such as metal oxidation and decarbonization, and the atomization process is quite complex. In short, the atomization method has a wide range of applications, not only to produce pure metal powders, such as lead tin, aluminum, zinc, iron, nickel, copper, bismuth, silver, cobalt, and other elemental powders, but also to produce various alloy powders, such as brass, bronze, aluminum alloy, alloy steel, high-speed steel, stainless steel, high temperature alloy, and other powders.

The relevant metals used in the atomization process mainly include iron, aluminum, silver, copper, nickel, etc.

The physical and electron micrographs of some metal powders are shown below (Changsha TIJO Metal Materials Co., Ltd.)

1.

Brand:316 stainless steel powder

Features: High temperature resistance, corrosion resistance, wear resistance, creep resistance, high appearance gloss, high strength, and high oxidation resistance

Purposes: aerospace, medical devices, automotive manufacturing, porous materials, spraying materials, 3D printing, metal injection molding, hot isostatic pressing molding, etc

2.

Brand:BNi-2 nickel based brazing filler

Features: Low brazing temperature, small melting temperature gap, good fluidity, and can be used to braze thinner workpieces

Purposes: vacuum brazing, stainless steel brazing, alloy steel brazing, diamond brazing, high-temperature alloy brazing, etc