Why do most educational magnets use AlNiCo magnets?
AlNiCo magnets are widely used in educational magnets, mainly due to their unique performance characteristics.
Advantages of AlNiCo magnets
Strong high temperature resistance: AlNiCo magnets have a high Curie temperature and can maintain stable magnetism even in high temperature environments, which is very important for some educational experimental equipment that needs to be used at high temperatures.
Good corrosion resistance: AlNiCo magnets have excellent corrosion resistance and do not require special surface treatment, which allows them to maintain good performance in various environments.
Superior mechanical properties: AlNiCo magnets have high mechanical strength and toughness and are not easy to break, which is very important for educational magnets that are often operated by students.
High stability: AlNiCo magnets have high magnetic stability and are not easy to demagnetize, which ensures the accuracy of experimental results.
Stable magnetic field strength：AlNiCo magnets have high remanence (Br), which means that they can retain strong magnetism after the external magnetic field disappears. In educational scenarios, such as demonstrating magnetic phenomena in physics experiments or making magnetic teaching aids for teaching, stable magnetic field strength is very important. For example, in an experimental device that demonstrates the force of a current-carrying wire in a magnetic field, AlNiCo magnets can provide a continuous and appropriately strong magnetic field, allowing the experimental phenomenon to be presented stably, making it easier for students to observe and understand physical principles such as electromagnetic induction.
Moderate coercive force (Hc):Coercive force is a parameter that measures the ability of a magnet to resist demagnetization. AlNiCo magnets have moderate coercive force, which makes them less likely to be demagnetized under normal use conditions. In a relatively mild environment such as a classroom, where there are no extreme conditions such as industrial strong magnetic field interference or high temperature, AlNiCo magnets can maintain their magnetism and ensure that teaching equipment can work stably for a long time. For example, when making teaching aids such as magnetic puzzles, which may be used repeatedly, AlNiCo magnets can withstand a certain degree of collision, friction, and weak magnetic field interference generated by surrounding electronic equipment without easily losing their magnetism.
Why choose AlNiCo magnets as educational magnets？
Safety: Although the magnetism of AlNiCo magnets is strong, it is relatively stable and not easy to produce splashing magnetic fragments, which is more secure for students’ safety.
Good experimental effect: Alnico magnets have high magnetic stability, which can ensure the reliability of experimental results and help students better understand the principles of magnetism.
Long service life: Due to their excellent performance, Alnico magnets have a long life and can be used repeatedly, reducing experimental costs.
Comparison of other magnetic materials
NdFeB magnets: The strongest magnetism, but brittle and sensitive to temperature, not suitable for educational environments with frequent operations.
Ferrite magnets: Weaker magnetism, low cost, but not as stable as Alnico magnets.