Traditional NdFeB magnets are wildly used because of their excellent magnetic performance,however,their poor corrosion resistance make it cannot be used without coating.
As many files need the NdFeB magnet used without coating or only phosphate surface treatment,the magnet should be with high corrosion resistance.Low weight loss NdFeB,with high corrosion resistance,can meet this requirement and wildly used in motors,Wind energy,sensors elevator etc.
The weight loss test should be based on different Materrial mixture and production technology.Normally the weight loss is =<5mg/vcm2,and we enen can control the weight loss <=1mg/vcm2.
Test Condition:
132℃ and 95%RH 2.7 atmospheric pressure,168hours