Title :
Effects of Zr substitution for rare earth on the thermal stability of melt-spun (Nd/sub 0.75/Pr/sub 0.25/)/sub 12.5-x/Zr/sub x/Fe/sub 82/B/sub 5.5/ (x=0-3) powder and magnets
Author :
Chen, Z. ; Smith, B.R. ; Ma, B.M.
Author_Institution :
Magnequench Technol. Center, Durham, NC, USA
Abstract :
Summary form only given. Early studies have shown that Zr goes into the 2:14:1 structure and replaces the rare earth atoms, and leads to an increase in the anisotropy field in R/sub 2/Fe/sub 14/B (R=Ce, Nd, Pr, Gd and Dy). This raises an interesting question: can Zr substitution improve the performance of R/sub 2/Fe/sub 14/B type magnets and reduce the raw material cost? Thus, the purpose of this work is to make such a study by investigating the effects of Zr substitution for rare earth on the magnetic properties and microstructure of melt-spun (Nd/sub 0.75/Pr/sub 0.25/)/sub 12.5-x/Zr/sub x/Fe/sub 82/B/sub 5.5/ (x=0-3) powder and magnets.
Keywords :
boron alloys; crystal microstructure; iron alloys; magnetic anisotropy; melt spinning; neodymium alloys; permanent magnets; powder metallurgy; praseodymium alloys; remanence; thermal stability; zirconium alloys; (Nd/sub 0.75/Pr/sub 0.25/)/sub 12.5-x/Zr/sub x/Fe/sub 82/B/sub 5.5/; 2:14:1 structure; Ce/sub 2/Fe/sub 14/B; Dy/sub 2/Fe/sub 14/B; Gd/sub 2/Fe/sub 14/B; Nd/sub 2/Fe/sub 14/B; Pr/sub 2/Fe/sub 14/B; R/sub 2/Fe/sub 14/B (R=Ce,Nd,Pr,Gd,Dy); Zr/for rare earth substitution; anisotropy field; magnetic properties; melt-spun magnets; microstructure; powder; raw material cost; thermal stability; Anisotropic magnetoresistance; Costs; Iron; Magnetic properties; Magnets; Microstructure; Neodymium; Raw materials; Thermal stability; Zirconium;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1000829
