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Alnico disc magnets
Alnico disc magnets are composed of an alloy of aluminum, nickel, cobalt, and iron, characteristics that endow them with high resistance to demagnetization and the ability to withstand extreme temperatures up to 550 degrees Celsius. Their disc shape enhances the surface area in contact with other components, making them ideal for sensor and speaker applications, where uniform magnetic fields are crucial for optimal performance.
Manufactured typically through a sintering process, alnico disc magnets can also be produced via casting. Sintering offers finer metallurgical properties, while casting allows for larger dimensions and complex shapes. These magnets are particularly useful in applications requiring a balance of strength and thermal stability, such as in automotive sensors, medical instruments, and educational demonstrations.
Despite the advent of stronger rare earth magnets, alnico disc magnets are preferred in specific scenarios where long-term stability and reliability under high temperatures are paramount. Their traditional usage continues in various technology and industrial sectors, ensuring their ongoing relevance in modern engineering applications.
