Most cost-effective magnets - NdFeB magnets

From the earliest humans found natural magnet to magnet we are now widely used in a variety of Alnico , SmCo , ferrite and NdFeB . However , NdFeB, which is currently found in the commercialization of the highest performance magnets , known as the " Magneto " , with a high magnetic energy , the maximum energy product (BHmax) higher than ferrite (Ferrite) more than 10 times . Machining performance itself is also very good. Operating temperature up to 200 ℃. And its hard, stable performance , good price, so its application is extremely broad . But because of its strong chemical activity , it is necessary for its surface coating (e.g., plating Zn, Ni, electrophoresis, passivation ) .

Magnet industry , today's most popular and cost-effective materials, you had better count NdFeB magnets. Technically speaking, it is the ferrite, Alnico , SmCo magnets result of steady development ; secondly , in terms of performance , NdFeB is a " small stature , big magnetic " it a little Specifications , will be able to reach other materials, such as magnetic ferrite larger sizes . Finally , we'll do the magnet operating temperature from a comparison : NdFeB operating temperature , although not the most advantageous , but he was able to withstand 350 degrees Celsius maximum temperature, the number of magnetic material can withstand such temperatures added to samarium cobalt magnets . Although high temperature, there are disadvantages can be beneficial , because the price of cobalt is relatively high, so the samarium cobalt magnet , its price is also more expensive, and not conducive to environmental protection , also far and NdFeB magnetic material .

In short, although a wide range of magnetic materials , but we have to choose according to their needs magnet we need, after all, each material has his pros and cons.