Curie temperature determination of Pr{sub}14Fe{sub}(79.9-x)Co{sub}xB{sub}6Nb{sub}0.1 permanent magnet alloys

摘要

This paper reports the results of investigations carried out to determine the Curie temperature (T{sub}c) of some annealed praseodymium-based alloys represented by the formula Pr{sub}14Fe{sub}(79.9-x)Co{sub}xB{sub}6Nb{sub}0.1. The Curie temperature of these permanent magnet alloys increase linearly with the cobalt content at about (10.2±0.3)°C/at%. Pr{sub}14Fe{sub}80B{sub}6 and Pr{sub}14Fe{sub}79.9B{sub}6Nb{sub}0.1 magnetic alloys with a T{sub}c of 290°C have been used as a standard reference. Magnets were prepared from the alloys using the hydrogenation, disproportionation, desorption and recombination (HDDR) process.