Abstract
Effect of Nb substitution on the magnetic properties, temperature characteristics and microstructure of rapid-quenched Nd 11Dy 0.5Fe 82.4− n Nb n B 6.1 ( n = 0, 0.5, 1, 1.5, 2) permanent magnets has been investigated. It is found that H cj increases with increasing Nb content and the irreversible flux loss decreases with that. Nb substitution makes grains smaller and leads to the homogenization and regularization of grains. Also Nb substitution can enhance exchange coupling pining field and reduce inner dispersal magnetic field. As a result, the irreversible flux loss decreases notably and the magnets can be used at higher temperature. The maximum operating temperature of Nd 11Dy 0.5Fe 81.4Nb 1B 6.1 alloy is higher than 150 °C.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
