Three indicators for measuring soft magnetic powder

Three indicators for measuring soft magnetic powder
1. Oxygen content
Generally speaking, the oxygen content of products produced by professional soft magnetic powder manufacturers is relatively low, so the oxygen content can also be one of the important indicators to measure powder performance. If the oxygen content of soft magnetic powder is too high, it will affect the magnetic properties of the powder. Therefore, the oxygen content of qualified powders is usually controlled within the normal industry standard range. Consumers can pay attention to this aspect when making purchases.
2. Apparent density
The apparent packing density is also one of the important indicators for measuring the performance of soft magnetic powder. If the apparent packing density is high, the powder content per unit volume is higher. In general, some physical properties of soft magnetic powder will directly affect the size of bulk density, such as the size, shape, surface finish and particle size distribution of powder particles. Generally speaking, soft magnetic powder produced by gas atomization process has a high apparent packing density, and the powder is generally spherical or elliptical, with a smooth surface and no bridging phenomenon.
3. Powder morphology
Soft magnetic particles with high-quality morphology typically exhibit excellent performance. Most powder particles are spherical, with a smooth surface and few satellite balls. The morphology of soft magnetic powder is mainly related to atomization process parameters, including alloy melt temperature, gas flow rate, gas velocity, etc. In addition, the physical properties of alloy melt also include parameters such as surface tension, viscosity, density, etc. The relationship between the two is very close.