Predicting Magnetic Remanence of NdFeB Magnets from Composition

The composition of NdFeB-type magnets has a great impact on their performance. To enhance the remanence of the magnet, Zr and Co are alloyed into the starting materials. To develop an empirical equation that calculates the remanence based on alloying elements, the multiple linear regression model is developed in this work. It elucidates the statistical relationship between alloying elements content and magnetic remanence for Zr/Co-alloyed NdFeB magnets. The model is simple and straightforward and has a high degree of accuracy and stability, which contributes to fast low low-cost magnetic remanence estimations.