Effects of Y and Zr Doping on Microstructure and Magnetic Properties for CeFeB Alloy [Y和Zr掺杂对CeFeB合金微观结构和磁性能的影响]

作者：Zhou Y.; Li W.; Fu X.; Hou Y.; Huang Y.^*

来源：Rare Metal Materials and Engineering, 2021, 50(9): 3139-3143.

• CeFeB alloy
• Magnetic properties
• Y doping
• Zr doping

Effects of Y and Zr doping on the phase constituent, magnetic properties, and temperature stability for CeFeB alloy were investigated. The results show that CeYFeB alloy consists of the 2:14:1 main phase and a small amount of α -Fe phase. Magnetic properties including coercivity, remanence, and magnetic product energy improve considerably after Y doping. Meanwhile, the temperature stability is enhanced significantly. Due to the excellent intrinsic magnetic properties and higher temperature stability of Y2Fe14B phase, the remanence and coercivity temperature coefficients are -0.32%/K and -0.41%/K, increasing by 38.5% and 40.6%, respectively, compared to those of the pure CeFeB alloy. After the Y and Zr co-doping, the coercivity, remanence, and magnetic product energy improve greatly, increasing by 30.9%, 58.1%, and 204.8%, respectively, compared to those of pure CeFeB alloy, because of the joint effects of enhanced magnet crystalline anisotropic field and refined grain size.

• 单位
  南昌航空大学