Soft magnetic alloy powder-FeSiAl Sendust powder, an indispensable absorbing material for the 5G generation!!

Addressing Electromagnetic Wave Issues in the 5G Era: Try Iron-Based Soft Magnetic Alloy Powders!!

The 5G frequency band operates in millimeter waves, offering faster data transmission speeds, higher frequency bands, and increased bandwidth. However, various high-intensity electromagnetic waves can interfere with each other during propagation, affecting communication quality. Simultaneously, the electromagnetic radiation between high-frequency components and devices poses an increasing threat to human health. Therefore, developing effective absorptive materials to eliminate electromagnetic interference and radiation has become a crucial aspect of 5G communication product development.

Absorptive materials refer to functional materials that can absorb and attenuate the energy of electromagnetic waves entering space, reducing or eliminating reflected electromagnetic waves. Typically, these materials are composed of a base material and a composite of lossy media. By using small polar molecules to absorb and dissipate minimal energy, these materials play a vital role. Following the rule of electromagnetic wave propagation in a medium from low magnetic permeability to high magnetic permeability, electromagnetic waves are guided using high magnetic conductivity magnetic materials. Through resonance, a large amount of the radiated energy of electromagnetic waves is absorbed, and the energy is converted into heat through coupling. Therefore, the rapid development of 5G communication not only demands effective absorptive materials but also requires thermally conductive materials. Consequently, some manufacturers have recently developed products by combining materials that possess both thermal conductivity and absorptive functionalities to achieve complementary effects.
 

Iron-based soft magnetic alloy powders are one category of absorptive materials, including iron-silicon powder, iron-silicon-aluminum powder, iron-silicon-chromium powder, iron-nickel powder, and more. Despite having weaker magnetic permeability compared to iron oxide sheet, these materials offer flexible dimensions to meet low-loss product processing requirements. Their excellent processing performance helps reduce scrap rates and processing costs, making the market demand for these materials increasingly high.

Common types of iron-based soft magnetic alloy powders include:

In addition to their application as absorptive materials, soft magnetic alloy powders are widely used in the manufacturing of high-current choke coils and high-performance magnetic rings due to their excellent DC bias characteristics and extremely low losses.

Kelly Chemical provides various high-quality, high-specification iron-based soft magnetic alloy materials, effectively enhancing the added value of products.
 

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