Fundamental research on magnetic materials for hybrid cars

We carry out fundametal research on the development of permanent magnets and soft magnetic materials for future hybrid car mortors in collabortion with engineers of TOYOTA through the NIMS-TOYOTA Materials Center of Excellence for Sustainable Mobility

Subtheme
１．Studies on coercivity mechanism of Nd-Fe-B sintered magnets by multi-scale characterization

We study the mechanism of the coercivity of sintered Nd-Fe-B magnets with various processing and alloy compositions by correlating the coercivity with detailed microstructural features. The microstrucural features are characterized in multi-scales using high resolution SEM, TEM and laser assisted 3D atom probe. Based on these knowledge, we design the processing and alloy compositions of higher coercivity permanent magnets without Dy.