Ferrite is a compound composed of iron, oxygen and other metal elements, commonly used ferrite are spinel type, nickel-zinc type, preparation methods such as high-energy ball milling method, co-precipitation method, etc., with high saturation magnetic induction strength, high coercivity, low magnetic resistance, high resistivity, excellent chemical stability and thermal stability. Ferrites are widely used in electronic information, communication, medical, magnetoacoustic materials, new energy, automotive electronics and other fields, such as magnetic cores, magnetic heads, electronic transformers, motors, sound absorption materials, etc.
We all know that ferrite is divided into soft magnetic and hard touch, we see the kind of speaker speaker above the kind of ferrite belongs to the hard magnetic (sintered ferrite) class, does not belong to the magnetic material, this material ferrite is not conductive, so when processing can not be wire cutting for processing.
Of course, not all ferrites are non-conductive, such as the soft magnets mentioned below can conduct electricity, only some are better and some are weaker in terms of permeability.
Which ferrite material can conduct electricity?
Soft magnetic materials are magnetic materials with high magnetic permeability and low magnetic resistance. Their ability to effectively concentrate magnetic fields in specific locations makes them widely used in electric motors, transformers, converters and other power equipment.
Soft magnetic materials can be divided into two categories: ordinary electrical steel sheets and amorphous alloys. Electrical steel sheets have low permeability and high reluctance, but they are widely used in transformers, motors and other fields because they are cheap and easy to manufacture. While amorphous alloy materials have higher permeability and lower reluctance, but are more expensive and are usually used in high performance power equipment, such as high speed motors, high speed transformers, etc.
In the manufacturing process of soft magnetic materials, cold rolling, hot rolling and annealing processes are generally used. Among them, annealing is one of the most important processes, which can eliminate the stress in the material, improve the magnetic permeability and reduce the magnetic resistance, and make the material more soft.
Soft magnetic material ferrite belongs to the conductive material, specific high magnetic permeability, high resistivity, generally used in high frequency, mainly for electronic communications, like our daily contact with computers, televisions, can be found.
Soft magnetic ferrite mainly has manganese zinc and nickel zinc, two materials manganese zinc ferrite permeability than nickel zinc ferrite.