Influence of Dissolving Fe-Nb-B-Dy Alloys in Zirconium on Phase Structure, Microstructure and Magnetic Properties

This paper refers to the structural and magnetic properties of [(Fe80Nb6B14)(0.88)Dy-0.12](1-x)Zr-x (x = 0; 0.01; 0.02; 0.05; 0.1; 0.2; 0.3; 0.5) alloys obtained by the vacuum mold suction casting method. The analysis of the phase contribution indicated a change in the compositions of the alloys. For x < 0.05, occurrence of the dominant Dy2Fe14B phase was observed, while a further increase in the Zr content led to the increasing contribution of the Fe-Zr compounds and, simultaneously, separation of crystalline Dy. The dilution of (Fe80Nb6B14)(0.88)Dy-0.12 in Zr strongly influenced the magnetization processes of the examined alloys. Generally, with the increasing x parameter, we observed a decrease in coercivity; however, the unexpected increase in magnetic saturation and remanence for x = 0.2 and x = 0.3 was shown and discussed.

Automated summary

This paper discusses the structural and magnetic properties of alloys obtained by the vacuum mold suction casting method, with a focus on the phase contributions and magnetization processes. The addition of Zr led to changes in phase contributions and influenced the magnetization processes. Surprisingly, there was an unexpected increase in magnetic saturation and remanence in some alloys.