- Manufacturing Process:
- Cast AlNiCo: This type is made by pouring a molten alloy into a mold and then allowing it to cool and solidify. This process results in a material with good magnetic properties and shape versatility.
- Sintered AlNiCo: Sintering involves compacting fine AlNiCo powder in a mold under high pressure and then heating it to just below its melting point. This process fuses the powder particles together, creating a solid material. Sintering generally results in a denser and more uniform structure compared to casting.
- Properties:
- Cast AlNiCo: Typically has lower magnetic properties (in terms of coercivity and remanence) compared to sintered AlNiCo. It tends to have a lower density and may exhibit some dimensional variability due to the casting process.
- Sintered AlNiCo: Generally has higher magnetic properties, including coercivity and remanence. It also tends to have a higher density and better dimensional accuracy due to the nature of the sintering process.
- Applications:
- Cast AlNiCo: Suitable for applications where intricate shapes are needed or where magnetic strength is not the primary concern. Commonly used in instruments, sensors, and small motors.
- Sintered AlNiCo: Preferred for applications requiring strong magnetic performance, such as sensors, relays, and certain types of electric motors where high stability and strength are critical.
- Cost and Availability:
- Cast AlNiCo: Generally more economical to produce in small quantities and offers more flexibility in design due to the casting process.
- Sintered AlNiCo: Usually more expensive due to the higher manufacturing costs associated with the powder processing and sintering steps. However, it provides superior magnetic properties and consistency.
Alnico Magnet
The difference between cast AlNiCo and sintered AlNiCo
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