Ann: NTU Presentation - Low Emissions Conference 15 Nov 2017, page-36

"Daido Steel and Honda Adopt World’s First Hybrid Vehicle Motor Magnet
Free of Heavy Rare Earth Elements"

http://www.daido.co.jp/en/event/160712_freemag_hevmotor.html



"In the drive to reduce the critical Heavy Rare Earth (HRE) content of magnets for green technologies, HRE-free Nd-Fe-B has become an attractive option. HRE is added to Nd-Fe-B to enhance the high temperature performance of the magnets. To produce similar high temperature properties without HRE, a crystallographically textured nanoscale grain structure is ideal; and this conventionally requires expensive “die upset” processing routes. Here, a Flash Spark Plasma Sintering (FSPS) process has been applied to a Dy-free Nd_30.0Fe_61.8Co_5.8Ga_0.6Al_0.1B_0.9 melt spun powder (MQU-F, neo Magnequench)."

https://www.nature.com/articles/s41598-017-11660-9