MAGNETS PURCHASING GUIDE
Magnet is one material that creates a magnetic field. And the magnetic field is invisible but it is exactly there.As we know there are 3 types of magnets: temporary, permanent and electromagnets. But what we alway use is permanent magnet. So in this website, permanent is our core-topics
Types of Permanent Magnets
A permanent magnet is one which is made from a magnetized material and creates its own consistent magnetic field. An example is a refrigerator magnet used to hold notes on the refrigerator door. Materials that can be magnetized are said to be ferromagnetic or ferro. Such materials include; iron, cobalt, nickel, naturally occurring minerals like lodestone, and rare-earth metals. Despite the fact that ferromagnetic materials are the only ones strongly attracted to magnets to be considered magnetic, all other materials respond quite fast to a magnetic field.
Since they are very normal in the market today, so this article will mostly talk about permanent magnets. The main types include:
Neodymium Iron Boron (NdFeB) Magnets
Big Neodymium Magnet
These are commonly referred to as neodymium magnets. They are made through rare earth metals. When we talk about strong power and efficiency, that is the most common types. If you want to a magnet with a secure and powerful power, then neodymium magnet will be your best choice. Nevertheless, since they are made of iron, so they are rust very fast, especially when was exposed to wet conditions for a long time.
Samarium Cobalt Magnets
Samarium cobalt magnets has big power too. They were developed 50 years ago, even before the neodymium magnets. If you choose using this type of magnets ,you will found that they hardly corrode and support high temperature resistance as compared to other magnets. So this type magnet can easily retain their magnetism, no matter how extremely high or extremely low temperature conditions. This makes them an ideal choice especially in applications that involve high or low temperatures.
Alnico magnets are made from aluminum, nickel, and cobalt. They are not very common in the market. Because they have been replaced by neodymium, ceramic, and samarium magnets. And as they do not have strong magnetize , so most of time just be used in basic applications such as fridge magnets.
Ceramic or Ferrite Magnets
Ceramic magnets are very common in the market today. This main reason is that is very cheap, so it is a nice option. Although they are not as powerful as neodymium magnets. But they are mostly used as fridge magnets.
If you know the various types of magnets and their strengths and weaknesses, it helps you to buy magnets in the market for your different projects.
However, if you are faced with any issue, we are here to help you out. Be free to contact us for any assistance.