The manufacturing process of Samarium Cobalt Magnet

The manufacturing process of Samarium Cobalt Magnet

Samarium Cobalt Magnets are amongst the strongest rare earth magnets, boasting high magnetic energy density, temperature stability, and corrosion resistance - qualities which often make them an alternative choice to neodymium iron boron (NdFeB) magnets when dealing with applications that demand higher temperature ranges or corrosion issues. They may be suitable for applications where corrosion issues need to be taken into consideration.

Samarium cobalt magnets are highly resistant to demagnetization, making them an excellent choice when you require a permanent magnet that will perform reliably at high temperatures or in harsh environments, such as in servo motors.

These magnets are produced via sintering and come in two primary varieties; Sm1Co5 (SmCo 1:5) and Sm2Co17 (SmCo 2:17). Of the two forms, the more popular form is usually Sm2Co17 as it offers a higher energy product at 22 MGOe and can be magnetized using lower field strengths than its more costly counterpart (Sm1Co5).

Cryogenic magnets have excellent corrosion and oxidation resistance and have an especially high magnetic energy density for their size, but are relatively brittle and require special handling when handling. As such, these magnets are often coated or plated with nickel to improve both their appearance and performance in vacuum environments or areas likely to contain metals that can damage them.

Due to their high magnetic energy density, these magnets can have an indelible mark on surrounding metalwork in magnetic circuits; therefore, proper insulation must be provided if they will be placed close to other ferrous metals such as ferrous iron. Due to these unique magnetic properties, samarium cobalt magnets make ideal magnets for use in electrical motors and generators, power electronics, sensors or any other application that requires magnetism.

Samarium cobalt magnets can be expensive due to the complex process involved in creating them; hence they tend to cost more than their neodymium counterparts.

Cost-cutting measures allow these magnets to be manufactured using compression bonding; this process combines special samarium powder with plastic carrier substance before being die-pressed into shape, producing finished parts with excellent tolerances that require minimal machining for final shape forming. However, compression-bonded magnets have lower energy products compared to sintered ones and don't last as long in use.

Magnetic materials present a number of disadvantages, including their high cost and the need for special tools when working with them. Furthermore, they're very difficult to machine with standard tools and may break or crack if used incorrectly; special diamond tools should always be recommended instead.