Ferrite Block Magnets: A Solid Choice for Industrial Applications

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Ferrite block magnets factory, a cornerstone of modern magnetic technology, are widely utilized across various industries, from electronics to automotive. These versatile magnets are made primarily from a composite of iron oxide (Fe2O3) and strontium carbonate (SrCO3) or barium carbonate (BaCO3). 

Composition and Structure

Ferrite magnets are classified as ceramic magnets and are made using a combination of ferrite powder and a binding agent. The most common types are strontium ferrite (SrFe12O19) and barium ferrite (BaFe12O19). The choice between strontium and barium ferrite typically depends on cost considerations and specific application requirements.

The structure of ferrite magnets is crystalline and exhibits a hexagonal arrangement, which contributes to their magnetic properties. The magnetic domains within the ferrite material align when subjected to a magnetic field, allowing the magnets to maintain a strong magnetic field even when removed from the magnetizing source.

Magnetic Properties

One of the most notable characteristics of ferrite block magnets is their high coercivity, which refers to their ability to withstand demagnetization. This property is crucial for applications where the magnet must retain its magnetic strength over time, such as in motors, sensors, and magnetic separators.

Ferrite magnets typically have a remanence (the magnetization left after an external magnetic field is removed) ranging from 3,000 to 4,000 gauss, making them suitable for a wide array of applications. Their energy product, measured in megagauss-oersteds (MGOe), ranges from 3 to 5 MGOe, indicating that while they do not have the same energy density as neodymium magnets, they are often favored for their stability and cost-effectiveness.

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