The Effect of Niobium Content on the Curie Temperature and Microstructure of the Pr_(14)Fe_(79.9-x)Co_(16)B_6Nb_x Alloys

摘要

This study reports the results of investigations carried out to determine the Curie temperature (T_c) of various homogenized praseodymium-based alloys represented by the formula: Pr_(14)Fe_(79.9-x)Co_(16)B_6Nb_x (where x = 0, 0.01, 0.05, 0.1, 0.15, 0.50). The influence of niobium content on the microstructure of these alloys has investigated. The Curie temperature decreased about 3 ℃ for x = 0.5 at. %. It has been observed a remarkable grain refinement on the microstructure of the Pr_(14)Fe_(79.8)Co_(16)B_6Nb_(0.1) alloy when compared to the niobium-free alloy (x = 0 at. %).