... widely used in commercially available fields since the mid 1980's. makes it suitable for servo motors, disk brushless motors, ... humid environments, It usually need surface treatment according to customer's requirements to protect magnet. The surface treatment method include ... conductivity:7.7kcal/m.h.°CYoung's Modulus:1.6x1011N/m2Rigidity:0.64N/m2Poisson's Ratio:0.24Compressibility:9.8x10-12 m2 ...