Sunday, January 16, 2011

Rare Earth Magnets

Magnets made from rare earth elements and alloys are called rare earth magnets that are permanent. These magnets are the strongest type of magnets and much, more powerful than the alnico and common ferrite magnets because they are made of special types of alloys. These magnets which are called rare magnets are often misunderstood as the magnets being scarce. But the fact is that the alloys from which these magnets are made are abundant in nature and the word rare relates to precious one. Because of their unusual strength, these magnets are used in various industries. These earth magnets are an important application in most of the manufacturing industries and are typically found in hard drives, computer speakers and various other electronics appliances.


The rare earth family contains two types of magnets. The first type of earth magnets called Samarium-cobalt magnets were invented in the early 1960's. Though these were the first rare earth magnets to be invented they are not used commonly nowadays because they are quite costly to manufacture and have weak magnetic field strength. But they are still used in the manufacturing of applications operating at high temperatures where a high amount of strength is needed. These magnets are quite useful in manufacturing electronics because they are oxidation resistant.





In the 1980s, the other type of rare earth magnets were invented which are much stronger and affordable than the Samarium-cobalt magnets. These magnets consist of iron, neodymium and boron alloys and are commonly used in audio speakers, computer hardware and small home appliances. They are also useful to make toys in a safe manner because of their higher magnetic field strength than Samarium-cobalt. Though the neodymium magnets are quite beneficial to the industrial world, they are not useful to produce electronics that run high temperatures because they are not resistant to oxidation like the Samarium-cobalt type.


The demand for the rare earth magnets is increasing with the increase in the demand for the electronics and with the advancement of electronics. Apart from being used in the production of the audio speakers, computer parts and equipment, headphones, and other electrical devices they are also used in the manufacturing of various sporting goods. Many quality sporting products like the fishing reels, bicycles, and bearings are now using these magnets in their manufacturing processes.


You can buy these earth magnets from various online sources. It is beneficial to choose the distributor that provides magnets with quality alloys which are known for various benefits and strength. Review the costs of buying these magnets in bulk for the production of your products, and increase the efficiency of your manufacturing process with rare earth magnets. Internet is the best place to get the various rare earth magnets with different prices and by analyzing them you can get the best deal for your manufacturing needs and requirements.